{"title":"iOptron Counterweights","description":"\u003cp\u003eiOptron counterweights and shafts balance the telescope on iOptron equatorial mounts. Weights run from 1 kg for the SmartEQ and 1.35 kg, through 2 kg, 2.5 kg and 4.5 kg models for mounts from the CEM26 and GEM28 to the CEM40, GEM45 and CEM70, up to 10 kg for the CEM120, including a low-latitude version.\u003c\/p\u003e\u003cp\u003eCounterweight bars and extensions fit the HEM27\/HEM44, CEM26 and GEM28, ZEQ25\/CEM25 and SGP\/HAE mounts, plus a SkyTracker Pro counterweight package.\u003c\/p\u003e","products":[{"product_id":"ioptron-10kg-counterweight-for-cem120","title":"iOptron 10kg Counterweight for CEM120","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e10 kg (approx. 22 lbs) Weight\u003c\/li\u003e\n\u003cli\u003eDesigned for iOptron CEM120 Mounts\u003c\/li\u003e\n\u003cli\u003eEnsures Proper Telescope Balance\u003c\/li\u003e\n\u003cli\u003eImproves Tracking Accuracy and Motor Longevity\u003c\/li\u003e\n\u003cli\u003eEssential for Heavy Payloads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 10kg Counterweight for CEM120\u003c\/h2\u003e\n\u003cp\u003eThis iOptron 10kg Counterweight is designed specifically to balance heavy optical tube assemblies and imaging payloads on the iOptron CEM120 mount. Properly balancing your setup with this 10kg weight is essential for achieving accurate tracking and preventing undue stress on the mount's motors and gears.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e10kg Counterweight for iOptron CEM120 Mounts\u003c\/h3\u003e\n\u003cp\u003eThe iOptron 10kg Counterweight is a primary accessory for astronomers using large refractors, Schmidt-Cassegrains, or heavy astrophotography rigs on the CEM120 mount. Achieving perfect balance is critical for the mount's pointing and tracking accuracy, especially during long-exposure imaging.\u003c\/p\u003e\n\u003cp\u003eWithout sufficient counterweight, the mount's motors strain to track accurately, which can introduce periodic error and reduce the longevity of the drive system. This single 10kg weight provides the necessary mass to achieve a state of neutral balance, allowing the motors to guide smoothly and precisely for sharper images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen do I need the iOptron 10kg counterweight for my CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the \u003cstrong\u003eiOptron 10kg counterweight\u003c\/strong\u003e when your telescope and imaging equipment are heavy enough that the standard included counterweights cannot achieve proper balance. This is common with large OTAs (11\" and above) or when using multiple guide scopes, cameras, and filter wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many 10kg counterweights do I need for my CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe number of weights depends on your total payload weight. A general rule is to match the payload weight with an equivalent amount of counterweight. For a very heavy setup, you may need more than one \u003cstrong\u003e10kg counterweight\u003c\/strong\u003e or a combination of different weight sizes to achieve perfect balance on your CEM120.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this iOptron 10kg counterweight compatible with other iOptron mounts?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis counterweight is specifically designed for the iOptron CEM120 mount series. While it may physically fit on other mounts with the same counterweight shaft diameter, its use is only officially supported and tested for the CEM120.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 10kg counterweight to balance a Celestron C11 on my iOptron CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003e10kg counterweight\u003c\/strong\u003e is an excellent choice for balancing a Celestron C11 optical tube on a CEM120 mount. Depending on the accessories attached (focal reducer, camera, guide scope), you may need just this single weight or an additional smaller weight to achieve precise balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of using a single 10kg iOptron counterweight versus two smaller ones?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing a single \u003cstrong\u003e10kg counterweight\u003c\/strong\u003e is often more convenient and can be placed closer to the mount's axis of rotation compared to stacking multiple smaller weights further down the shaft. This can result in a lower moment of inertia, making it slightly easier for the mount's motors to make fine adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 10kg counterweight help my CEM120 track the Andromeda Galaxy (M31) for long exposures?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a large target like the Andromeda Galaxy (M31), you'll be taking multi-minute exposures. The \u003cstrong\u003e10kg counterweight\u003c\/strong\u003e ensures your CEM120 is perfectly balanced, which minimizes strain on the motors. This allows the autoguiding system to make smooth, tiny corrections, resulting in round stars and sharp details across the entire exposure, free from tracking errors caused by imbalance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10 kg (approx. 22 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron CEM120 Mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 10kg Counterweight for CEM120\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44967942127901,"sku":"IOP-7326","price":265.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-10kg-Counterweight-CEM120__20877.1636834689.1280.1280.jpg?v=1684347164"},{"product_id":"ioptron-9-5kg-counterweight-for-ieq45-cem60-and-cem70","title":"iOptron 9.5kg Counterweight for iEQ45, CEM60 and CEM70","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e9.5 kg (20.9 lbs) Counterweight\u003c\/li\u003e\n\u003cli\u003eBalances Heavy Telescope \u0026amp; Imaging Payloads\u003c\/li\u003e\n\u003cli\u003eCompatible with iOptron iEQ45, CEM40, GEM45, CEM60, \u0026amp; CEM70 Mounts\u003c\/li\u003e\n\u003cli\u003eGenuine iOptron Accessory for a Perfect Fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 9.5kg Counterweight for iEQ45, CEM60 and CEM70\u003c\/h2\u003e\n\u003cp\u003eThe iOptron 9.5kg Counterweight provides the critical mass required to balance larger telescope assemblies on iOptron's medium-to-heavy payload equatorial mounts. This single 9.5kg weight ensures stable, accurate tracking when your imaging payload exceeds the capacity of standard counterweights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBalancing Heavier Payloads: The 9.5kg Counterweight\u003c\/h3\u003e\n\u003cp\u003eWhen you upgrade to a larger optical tube or add a heavy imaging train with a cooled camera, filter wheel, and off-axis guider, your mount's balance point shifts dramatically. This 9.5kg counterweight provides the substantial mass needed to counteract these heavier payloads, preventing strain on your mount's motors and gears. Achieving precise balance is critical for accurate GoTo slewing and smooth tracking during long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMount Compatibility: For iEQ45, CEM60, CEM70 \u0026amp; More\u003c\/h3\u003e\n\u003cp\u003eThis counterweight is an original iOptron accessory, ensuring a perfect fit and finish on the counterweight shaft of several popular mounts. It is specifically designed for use with the iOptron iEQ45, CEM40, GEM45, CEM60, and CEM70 equatorial mounts. Using a genuine iOptron counterweight guarantees proper clearance and secure locking, avoiding the risks associated with third-party solutions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the iOptron 9.5kg Counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron 9.5kg Counterweight is designed to balance heavy telescope and imaging equipment payloads on compatible iOptron mounts. Proper balance reduces stress on the mount's drive system, leading to more accurate tracking and slewing for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a CEM60 mount with a 10\" SCT and an imaging camera. Is the iOptron 9.5kg Counterweight enough?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron 9.5kg Counterweight is an excellent choice for balancing a 10\" SCT on a CEM60 mount. Depending on the total weight of your camera, guide scope, and other accessories, you may need one or possibly two of these weights to achieve perfect balance in both declination and right ascension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich iOptron mounts are compatible with this 9.5kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 9.5kg counterweight is designed specifically for the counterweight shafts of the iOptron iEQ45, CEM40, GEM45, CEM60, and CEM70 mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use a single iOptron 9.5kg Counterweight instead of two smaller ones?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing a single, heavier 9.5kg counterweight keeps the mass closer to the mount's center of rotation compared to stacking two lighter weights further down the shaft. This can result in better mount responsiveness and stability. It also leaves more room on the counterweight shaft for fine-tuning the balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the iOptron 9.5kg Counterweight fit on my smaller SkyGuider Pro mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this counterweight will not fit a SkyGuider Pro. The 9.5kg mass is designed for heavy-duty equatorial mounts like the CEM60 and CEM70, and the bore diameter of the counterweight is too large for the smaller shaft of a portable star tracker.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the iOptron 9.5kg Counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need a heavier counterweight like this 9.5kg model if you cannot achieve balance with your existing weights positioned at the end of the counterweight shaft. If your telescope is still \"scope-heavy\" with the standard weights maxed out, this counterweight will solve the problem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e9.5 kg (20.9 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron iEQ45, CEM40, GEM45, CEM60, CEM70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 9.5kg Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44967942160669,"sku":"IOP-7226","price":223.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-9-5kg-Counterweight-iEQ45-CEM60-CEM70__02441.1636834787.1280.1280.jpg?v=1684347166"},{"product_id":"ioptron-4-5kg-counterweight-for-ieq30-zeq25-cem25-and-cem40","title":"iOptron 4.5kg Counterweight for iEQ30, ZEQ25, CEM25 and CEM40","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4.5kg (approx. 10 lbs) Weight\u003c\/li\u003e\n\u003cli\u003eFits 20mm Diameter Counterweight Shafts\u003c\/li\u003e\n\u003cli\u003eOfficial Accessory for iEQ30, ZEQ25, and CEM25 Mounts\u003c\/li\u003e\n\u003cli\u003eRequired for Balancing Heavier Telescope Payloads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 4.5kg Counterweight for iEQ30, ZEQ25, CEM25 and CEM40\u003c\/h2\u003e\n\u003cp\u003eThe iOptron 4.5kg Counterweight provides the necessary mass to balance larger optical tubes and heavy accessory loads on mounts using a 20mm counterweight shaft. This single 4.5kg weight is the official component for achieving stable, accurate tracking on popular iOptron mounts like the iEQ30, ZEQ25, CEM25, and CEM40.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBalancing Heavier Payloads on 20mm Shafts\u003c\/h3\u003e\n\u003cp\u003eProper balance is essential for protecting your mount's drive gears and achieving precise tracking for long-exposure astrophotography. When your telescope and imaging gear outweigh the capacity of standard counterweights, this 4.5kg unit restores equilibrium to the system. It slides onto the standard 20mm counterweight shaft and locks securely in place, ensuring your mount performs smoothly and accurately throughout the night.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Compatibility:\u003c\/strong\u003e Designed specifically for the iOptron iEQ30, ZEQ25, CEM25, and CEM40 series of equatorial mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Diameter:\u003c\/strong\u003e The central bore is machined for a precise fit on 20mm diameter counterweight shafts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical for Imaging:\u003c\/strong\u003e Enables the use of heavier telescopes, guide scopes, and cameras without compromising the tracking accuracy required for sharp, round stars.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the iOptron 4.5kg counterweight for my CEM25 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the \u003cstrong\u003eiOptron 4.5kg counterweight\u003c\/strong\u003e if you cannot achieve balance with your existing weights after adding a larger telescope, guide scope, or heavy camera. If your rig is still tube-heavy with the standard weight at the very end of the shaft, this heavier 4.5kg weight is required to achieve proper balance, which is when the telescope remains stationary in any orientation with the clutches unlocked.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill one 4.5kg counterweight be enough to balance an 8\" SCT on my iOptron iEQ30 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" SCT OTA typically weighs between 5-6 kg. A single \u003cstrong\u003e4.5kg counterweight\u003c\/strong\u003e, positioned further down the 20mm shaft, should provide sufficient leverage to balance the telescope for visual use. If you add a heavy imaging train with a guide scope and camera, you may need to add a second, smaller weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this 4.5kg counterweight compatible with an iOptron SkyGuider Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This counterweight is specifically designed for mounts with a \u003cstrong\u003e20mm diameter counterweight shaft\u003c\/strong\u003e, such as the iEQ30, ZEQ25, CEM25, and CEM40. The iOptron SkyGuider Pro uses a smaller, proprietary counterweight and shaft system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the diameter of the hole on the iOptron 4.5kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe central bore of the iOptron 4.5kg counterweight is designed to fit a \u003cstrong\u003e20mm diameter\u003c\/strong\u003e counterweight shaft, which is the standard for the compatible iEQ30, ZEQ25, CEM25, and CEM40 mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging the Andromeda Galaxy (M31) with a refractor and guide scope on my CEM40. Why is this counterweight important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor long-exposure astrophotography of targets like the Andromeda Galaxy (M31), perfect balance is critical for precise tracking. The \u003cstrong\u003e4.5kg counterweight\u003c\/strong\u003e ensures your CEM40's motors are not strained, preventing tracking errors that cause trailed stars and blurry images. It allows the mount to operate smoothly, which is essential for capturing fine detail over long imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack this 4.5kg counterweight with other iOptron weights on my ZEQ25?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as long as your 20mm counterweight shaft has sufficient length, you can stack multiple counterweights to balance very heavy payloads. Always ensure the total weight of your telescope, accessories, and counterweights does not exceed the mount's specified maximum payload capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.5 kg (approx. 10 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft Compatibility\u003c\/td\u003e\n\u003ctd\u003e20mm Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Mounts\u003c\/td\u003e\n\u003ctd\u003eiOptron iEQ30, ZEQ25, CEM25, CEM40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 4.5kg Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44967942193437,"sku":"IOP-3006-10","price":133.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-4-5kg-Counterweight-iEQ30-CEM25-CEM40__19175.1636834907.1280.1280.jpg?v=1684347168"},{"product_id":"ioptron-5kg-counterweight-for-ieq45-cem40-gem45-cem60-and-cem70","title":"iOptron 5kg Counterweight for iEQ45, CEM40, GEM45, CEM60 and CEM70","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eWeight: 5 kg (11 lbs)\u003c\/li\u003e\n\u003cli\u003eShaft Compatibility: 28.5 mm inner diameter\u003c\/li\u003e\n\u003cli\u003eCompatible Mounts: iEQ45, CEM40, GEM45, CEM60, CEM70\u003c\/li\u003e\n\u003cli\u003eLocking Mechanism: M8 Locking Screw\u003c\/li\u003e\n\u003cli\u003eDimensions: 148 mm Outer Diameter, 38 mm Height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 5kg Counterweight for iEQ45, CEM40, GEM45, CEM60 and CEM70\u003c\/h2\u003e\n\u003cp\u003eThis iOptron 5kg Counterweight provides 11 lbs of balancing force, essential for stabilizing your imaging payload on a range of iOptron equatorial mounts. Machined with a 28.5 mm inner diameter, it ensures a secure, no-slip fit on the counterweight shaft of compatible mounts including the CEM40, GEM45, and CEM70 series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Precision Fit for 28.5mm Counterweight Shafts\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for iOptron's 28mm-class counterweight shafts, this weight's 28.5 mm bore provides a snug fit that minimizes vibration and prevents shifting during slews. A generously sized M8 locking screw allows for easy, tool-free adjustment, even with gloves on, ensuring you can quickly secure the weight at the optimal position for perfect balance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Compatibility:\u003c\/strong\u003e Designed for a direct fit on the iOptron iEQ45, CEM40, GEM45, CEM60, and CEM70 equatorial mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Locking:\u003c\/strong\u003e The integrated M8 locking screw tightens down firmly, holding the counterweight in place throughout an imaging session.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e5 kg (11 lbs) of Stable Balancing Power\u003c\/h3\u003e\n\u003cp\u003eAt 5 kg (11 lbs), this counterweight is ideal for balancing small to medium-sized optical tubes and fully-loaded imaging trains. Its compact 148 mm outer diameter and 38 mm height allow you to stack multiple weights if needed, or to achieve balance with minimal extension on the counterweight shaft, reducing the overall moment arm and strain on your mount's drive system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich iOptron mounts is the 5kg counterweight compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 5 kg counterweight is designed for iOptron mounts that use a 28 mm diameter counterweight shaft. This includes the \u003cstrong\u003eiEQ45, CEM40, GEM45, CEM60, and CEM70\u003c\/strong\u003e models. The counterweight has a 28.5 mm inner bore for a proper fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need this 5kg iOptron counterweight for my setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need additional counterweights when your telescope and imaging equipment (camera, guide scope, filter wheel) are too heavy for your existing weights to balance. As a general rule, the total counterweight should roughly equal the total weight of your payload. This 5 kg (11 lbs) weight is a standard choice for balancing payloads in the 8-15 lb range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a GEM45 mount and an 8\" f\/10 Schmidt-Cassegrain. Is one 5kg counterweight enough?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" SCT optical tube typically weighs around 12-14 lbs. The standard counterweight that comes with the GEM45 is often around 11 lbs (5 kg). While a single 5 kg weight might achieve balance if slid to the very end of the shaft, adding a second 5 kg weight allows you to position both closer to the mount's axis. This reduces torque and improves tracking stability, making it a highly recommended configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 5kg counterweight on an iOptron SkyGuider Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The SkyGuider Pro uses a much smaller 20mm diameter counterweight shaft. This 5kg counterweight has a 28.5 mm bore and will not fit. You must use the counterweight specifically designed for the SkyGuider Pro.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the locking mechanism on the iOptron 5kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe counterweight uses a single, large locking screw with an M8 thread. This allows you to firmly secure the weight at any position along the counterweight shaft by hand, without the need for additional tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the physical dimensions of the iOptron 5kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis counterweight has an outer diameter of \u003cstrong\u003e148 mm (5.8\")\u003c\/strong\u003e and a height (thickness) of \u003cstrong\u003e38 mm (1.5\")\u003c\/strong\u003e. The inner bore diameter is \u003cstrong\u003e28.5 mm (1.12\")\u003c\/strong\u003e to fit on 28mm shafts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5 kg (11 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e148 mm (5.8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Diameter (Inner)\u003c\/td\u003e\n\u003ctd\u003e28.5 mm (1.12\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e38 mm (1.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Mechanism\u003c\/td\u003e\n\u003ctd\u003eLocking Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Screw Thread\u003c\/td\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight \u0026amp; Dimensions\u003c\/td\u003e\n\u003ctd\u003e12 lbs, 10 x 9 x 5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 5kg Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis accessory does not require specific software or a manual.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44967942258973,"sku":"IOP-8027","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-5kg-Counterweight-iEQ45-CEM40-GEM45-CEM60-CEM70__00632.1647980066.1280.1280.jpg?v=1684347170"},{"product_id":"ioptron-1-35kg-counterweight","title":"iOptron 1.35kg Counterweight","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e1.35 kg (3 lb.) Weight\u003c\/li\u003e\n\u003cli\u003eFor 20mm Diameter Counterweight Shafts\u003c\/li\u003e\n\u003cli\u003e20.5 mm Inner Diameter Bore\u003c\/li\u003e\n\u003cli\u003eCompact 79 mm Outer Diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 1.35kg Counterweight\u003c\/h2\u003e\n\u003cp\u003eThe iOptron 1.35 kg (~3 lb.) Counterweight provides precise balance for mounts using a 20mm counterweight shaft, fitting securely with its 20.5 mm inner diameter. Its compact 79 mm outer diameter and 39 mm height ensure ample clearance and allow for fine-tuning adjustments, making it an essential accessory for lightweight astrophotography rigs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Balancing for Lightweight Setups with a 20mm Shaft\u003c\/h3\u003e\n\u003cp\u003eThis 1.35 kg counterweight is the ideal solution for achieving perfect balance when using smaller, lighter payloads. It's specifically designed for iOptron mounts that utilize a 20mm diameter counterweight shaft, such as the SkyGuider Pro, SkyHunter, and GEM28. The 20.5 mm inner bore provides a secure fit while allowing for smooth adjustments along the shaft.\u003c\/p\u003e\n\u003cp\u003eUsing the correct weight is critical for the tracking accuracy of any equatorial mount. This smaller weight prevents the \"overkill\" of a standard 5 kg weight, which can make fine balancing of a light setup difficult and add unnecessary stress to the mount's motors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Right Fit: When to Choose the 1.35 kg Counterweight\u003c\/h3\u003e\n\u003cp\u003eWhile larger counterweights are necessary for heavy optical tubes, the 1.35 kg weight excels in specific scenarios where minimal mass is required. It's the perfect choice for balancing a DSLR or mirrorless camera with a telephoto lens, a small 60-80mm refractor, or when you've added a small guide scope that slightly throws off an already balanced system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSLR \u0026amp; Lens Astrophotography:\u003c\/strong\u003e Perfectly balances most camera and lens combinations on a star tracker without adding excessive weight to your portable setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall Guide Scope Addition:\u003c\/strong\u003e If adding an autoguiding package makes your main scope slightly tail-heavy, this weight provides the small increment needed to restore equilibrium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Portable Visual Setups:\u003c\/strong\u003e When using a small Maksutov or refractor for visual observation, this single 1.35 kg weight is often all you need for stable, accurate tracking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich iOptron mounts use the 1.35 kg counterweight with a 20mm shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis counterweight is designed for iOptron mounts that feature a \u003cstrong\u003e20mm diameter counterweight shaft\u003c\/strong\u003e. This includes popular portable and lightweight mounts such as the \u003cstrong\u003eiOptron SkyGuider Pro\u003c\/strong\u003e, \u003cstrong\u003eSkyHunter\u003c\/strong\u003e, and the \u003cstrong\u003eGEM28\u003c\/strong\u003e. Always check your mount's specifications to confirm the shaft diameter before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the iOptron 1.35 kg counterweight for my SkyGuider Pro with a DSLR and 200mm lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the exact scenario where the 1.35 kg counterweight is essential. A typical DSLR and 200mm lens combination requires a counterweight to balance properly on the declination axis. This weight provides the necessary mass to achieve equilibrium, ensuring the SkyGuider Pro's motor tracks smoothly without strain, resulting in sharper stars in your images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy GEM28 mount is slightly out of balance after adding a guide scope. Is the 1.35 kg counterweight a good solution?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The iOptron 1.35 kg weight is an excellent tool for making fine balance adjustments. If a larger weight gets you close but the addition of a guide camera, filter wheel, or heavy eyepiece tips the balance, sliding this smaller weight onto the shaft often provides the perfect amount of mass to achieve perfect balance without having to make large, imprecise adjustments with a heavier weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the dimensions of the iOptron 1.35 kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron 1.35 kg counterweight has the following dimensions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.35 kg (~3 lb.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 79 mm (~3 in.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter (Bore):\u003c\/strong\u003e 20.5 mm (~0.8 in.), for 20mm shafts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 39 mm (~1.54 in.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is my mount struggling to track accurately with a light telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePoor tracking with a light setup is often a symptom of improper balance. If you have no counterweight, or a counterweight that is too heavy, the mount's gears can experience backlash or uneven strain, leading to tracking errors. Using the appropriate counterweight, like this 1.35 kg model for lighter loads, ensures the motors work smoothly and efficiently, which is critical for long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen should I use this 1.35 kg iOptron weight instead of a larger 5 kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUse the \u003cstrong\u003e1.35 kg counterweight\u003c\/strong\u003e for payloads under approximately 3 lbs, such as a camera and lens or a very small refractor. A large 5 kg weight is overkill for such a light load and can make precise balancing difficult. The goal is to use the least amount of counterweight necessary, placed as far down the shaft as needed, to achieve balance. This minimizes the total mass the mount has to move.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.35 kg (~3 lb.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e79 mm (~3 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter (Bore)\u003c\/td\u003e\n\u003ctd\u003e20.5 mm (~0.8 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Shaft Diameter\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e39 mm (~1.54 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 1.35kg Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44967942291741,"sku":"IOP-8605","price":59.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-1-35kg-Counterweight__42902.1636835336.1280.1280.jpg?v=1684347174"},{"product_id":"ioptron-2-5kg-counterweight-for-ieq45-cem40-gem45-cem60-and-cem70","title":"iOptron 2.5kg Counterweight for iEQ45, CEM40, GEM45, CEM60 and CEM70","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2.5 kg (5.5 lbs.) weight for precise balancing\u003c\/li\u003e\n\u003cli\u003eFits 28.5 mm (1.12 in.) diameter counterweight shafts\u003c\/li\u003e\n\u003cli\u003eCompatible with iEQ45, CEM40, GEM45, CEM60, and CEM70 mounts\u003c\/li\u003e\n\u003cli\u003eSecure M8 locking screw with pin mechanism\u003c\/li\u003e\n\u003cli\u003eCompact 118 mm outer diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 2.5kg Counterweight for iEQ45, CEM40, GEM45, CEM60 and CEM70\u003c\/h2\u003e\n\u003cp\u003eThe iOptron 2.5kg (5.5 lbs.) counterweight is the essential accessory for achieving precise balance on iOptron mounts, including the iEQ45, CEM40, GEM45, CEM60, and CEM70. Designed specifically for shafts with a 28.5 mm diameter, this weight secures firmly with an M8 locking screw, ensuring your setup remains stable throughout an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieve Perfect Balance with the 2.5kg iOptron Counterweight\u003c\/h3\u003e\n\u003cp\u003eProper balance is critical for accurate tracking and sharp long-exposure images. This 2.5 kg weight is ideal for balancing lighter telescope payloads, such as small refractors or wide-field camera lens setups. It also allows for fine-tuning your balance after adding accessories like a guide scope, filter wheel, or heavy camera, preventing strain on your mount's drive motors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Fit for 28.5mm Counterweight Shafts\u003c\/h3\u003e\n\u003cp\u003eThis counterweight is engineered for a perfect fit on iOptron's standard 28.5 mm (1.12 in.) counterweight shafts. The locking mechanism features a robust M8 locking screw with an integrated pin, which provides a secure, non-slip grip that prevents the weight from shifting or rotating unexpectedly. Its low-profile 25 mm height and 118 mm diameter keep your setup compact and manageable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if the iOptron 2.5kg counterweight is right for my CEM40 with a small refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2.5 kg (5.5 lbs.) weight is an excellent choice for balancing lighter instruments on a CEM40. If your telescope and imaging gear are relatively light and you find the standard counterweight is too heavy or needs to be positioned awkwardly high on the shaft, this smaller weight allows for more precise and stable balancing closer to the mount's axis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 2.5kg counterweight to fine-tune the balance of my iEQ45 when I add a guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a perfect application. Adding accessories often creates a small imbalance that doesn't warrant a full-sized counterweight. The 2.5 kg weight allows you to make subtle adjustments to achieve perfect equilibrium without significantly increasing the total mass on your iEQ45 mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the shaft diameter compatibility for this iOptron 2.5kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis counterweight is designed with an inner diameter (bore) of \u003cstrong\u003e28.5 mm (1.12 in.)\u003c\/strong\u003e. It is specifically made to fit iOptron mounts that use this shaft size, including the iEQ45, CEM40, GEM45, CEM60, and CEM70.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the locking mechanism on the iOptron 2.5kg counterweight work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe counterweight uses a reliable locking screw with a pin. You simply slide the weight onto the 28.5 mm shaft and tighten the M8 screw. The pin engages with the shaft to provide a secure grip, preventing any slipping or rotation during use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this 2.5kg counterweight compatible with mounts from other brands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for iOptron mounts, it may be compatible with any mount that uses a 28.5 mm diameter counterweight shaft. However, we can only guarantee a perfect fit and function with the specified iOptron models (iEQ45, CEM40, GEM45, CEM60, and CEM70).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the physical dimensions of the iOptron 2.5kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe counterweight has an outer diameter of \u003cstrong\u003e118 mm (4.6 in.)\u003c\/strong\u003e and a height of \u003cstrong\u003e25 mm (1 in.)\u003c\/strong\u003e. Its compact size makes it easy to handle and helps maintain a lower profile on your mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.5 kg (5.5 lbs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft Bore Diameter\u003c\/td\u003e\n\u003ctd\u003e28.5 mm (1.12 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e118 mm (4.6 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e25 mm (1 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Mechanism\u003c\/td\u003e\n\u003ctd\u003eLocking screw with pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Screw Thread\u003c\/td\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e6.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e9 x 9 x 4.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 2.5kg Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44967949599005,"sku":"IOP-8027-05","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/IOP-8027-05__60485.1639768345.1280.1280.jpg?v=1684347236"},{"product_id":"ioptron-2kg-counterweight-for-cem26-gem28-and-az-mount-pro","title":"iOptron 2kg Counterweight for CEM26, GEM28 and AZ mount Pro","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2 kg (4.5 lbs.) weight for precise balancing\u003c\/li\u003e\n\u003cli\u003eFits 20mm diameter counterweight shafts\u003c\/li\u003e\n\u003cli\u003eOfficial accessory for iOptron CEM26, GEM28, and AZ Mount Pro mounts\u003c\/li\u003e\n\u003cli\u003e118mm outer diameter and compact 25mm height\u003c\/li\u003e\n\u003cli\u003eSecure locking screw with pin mechanism prevents slipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 2kg Counterweight for CEM26, GEM28 and AZ Mount Pro\u003c\/h2\u003e\n\u003cp\u003eThe iOptron 2kg Counterweight provides precise balance for lighter telescope setups on mounts using a 20mm counterweight shaft, such as the CEM26, GEM28, and AZ Mount Pro. Weighing 4.5 lbs (2 kg), this compact weight has a 118mm outer diameter and a height of just 25mm, allowing you to achieve perfect equilibrium for payloads that don't require a heavier, standard counterweight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecise Balancing: The 2 kg (4.5 lbs.) Solution for Lighter Setups\u003c\/h3\u003e\n\u003cp\u003eStandard counterweights are often too heavy for balancing small refractors, camera lenses, or other lightweight imaging rigs. This 2 kg weight solves that problem, enabling you to achieve perfect balance without adding excessive mass, which improves tracking accuracy and reduces strain on the mount's motors. It's also an ideal secondary weight for fine-tuning the balance of a slightly heavier payload.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOEM Fit for 20mm Shafts: CEM26, GEM28 \u0026amp; AZ Mount Pro\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for iOptron mounts, this counterweight features a 20.5mm inner diameter bore to slide smoothly onto the 20mm counterweight shafts of the CEM26, GEM28, and AZ Mount Pro. The M8 locking screw incorporates a pin that provides a secure, positive lock against the shaft, ensuring your equipment stays balanced and safe throughout an imaging session without marring the shaft's surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen should I use the iOptron 2kg counterweight instead of a standard one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron 2kg counterweight is ideal for balancing very light payloads, such as a small wide-field refractor or a DSLR with a telephoto lens. Standard 5kg+ weights can be too heavy for these setups, making it difficult to achieve precise balance. This 4.5 lbs. weight gives you the fine control needed for optimal mount function.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2kg iOptron counterweight fit a non-iOptron mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis counterweight is designed for a \u003cstrong\u003e20mm diameter shaft\u003c\/strong\u003e, as confirmed by its 20.5mm inner bore. While it may fit other brands of mounts that use a 20mm shaft, compatibility is only guaranteed with the iOptron CEM26, GEM28, and AZ Mount Pro.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many iOptron 2kg counterweights do I need for my William Optics RedCat 51 on a GEM28 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a lightweight setup like a RedCat 51 (which weighs around 1.5kg) on a GEM28, a single \u003cstrong\u003eiOptron 2kg counterweight\u003c\/strong\u003e is typically sufficient to achieve proper balance, depending on your camera and accessories. It provides the right amount of mass without being excessive for such a portable rig.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack the iOptron 2kg counterweight with other iOptron weights?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. You can use the 2kg counterweight in combination with other iOptron weights on the same 20mm shaft. This is a common practice for precisely balancing a payload that falls between the standard weight increments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 'locking screw with pin' on the iOptron 2kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe locking screw with an integrated pin provides a more secure hold than a simple thumbscrew. The pin engages with the shaft to prevent any slipping or rotation, while the screw provides the clamping force. This design also helps prevent damage or deep scratches to the surface of your counterweight shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging with a DSLR and a 200mm lens on my CEM26. Is the iOptron 2kg counterweight the right choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. A DSLR and lens combination is a perfect use case for the \u003cstrong\u003eiOptron 2kg counterweight\u003c\/strong\u003e. This payload is too light for a standard counterweight, and the 2kg (4.5 lbs.) weight will allow you to perfectly balance the load on your CEM26 for stable, accurate tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2 kg (4.5 lbs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft Compatibility\u003c\/td\u003e\n\u003ctd\u003e20mm Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter\u003c\/td\u003e\n\u003ctd\u003e20.5 mm (0.8 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e118 mm (4.6 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e25 mm (1 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Mechanism\u003c\/td\u003e\n\u003ctd\u003eLocking screw with pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Screw Thread\u003c\/td\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight \u0026amp; Dimensions\u003c\/td\u003e\n\u003ctd\u003e5 lbs, 5.75 x 5.5 x 2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 2kg Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product does not have a specific manual or software.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44968007729437,"sku":"IOP-3006-05","price":77.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-2kg-Counterweight-3006-05__49891.1654181550.1280.1280.jpg?v=1684347807"},{"product_id":"ioptron-hem27-hem44-counterweight-bar","title":"iOptron HEM27\/HEM44 Counterweight Bar","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOfficial iOptron accessory for HEM series mounts\u003c\/li\u003e\n\u003cli\u003eEnables balancing of heavier telescope payloads\u003c\/li\u003e\n\u003cli\u003eCompatible with iOptron HEM27 and HEM44 mounts\u003c\/li\u003e\n\u003cli\u003eFeatures an integrated safety lock to prevent counterweight slippage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron HEM27\/HEM44 Counterweight Bar\u003c\/h2\u003e\n\u003cp\u003eThe iOptron HEM27\/HEM44 Counterweight Bar is the official shaft required to add counterweights to your iOptron HEM27 or HEM44 hybrid equatorial mount. While these mounts are designed for counterweight-free operation with lighter payloads, this bar is essential for balancing heavier optical tubes or complex imaging trains. It ensures your mount can achieve optimal tracking accuracy and stability when loaded closer to its maximum capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Balancing for Your iOptron HEM27 or HEM44 Mount\u003c\/h3\u003e\n\u003cp\u003eThis counterweight bar threads directly into the declination axis of your HEM27 or HEM44 mount, providing a robust and secure platform for standard counterweights. An integrated safety lock at the end of the shaft acts as a critical fail-safe, preventing weights from accidentally sliding off during setup, balancing, or transport. This simple component unlocks the full payload potential of your mount for serious astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen do I need the Counterweight Bar for my iOptron HEM27 or HEM44 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the \u003cstrong\u003eiOptron HEM27\/HEM44 Counterweight Bar\u003c\/strong\u003e when your telescope and imaging equipment approach or exceed the mount's specified payload for counterweight-free operation. Adding counterweights is necessary to maintain balance, reduce strain on the drive motors, and ensure precise tracking for astrophotography with heavier setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the safety lock on the iOptron HEM27\/HEM44 Counterweight Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe integrated safety lock is a small but crucial feature that prevents your counterweights from sliding off the end of the bar. This protects your equipment from falling and potential damage, especially if the counterweight's locking knob becomes loose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the iOptron HEM27\/HEM44 Counterweight Bar required for visual observing with a small refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLikely not. The primary advantage of the HEM mounts is their ability to handle lighter payloads, such as a small refractor for visual use, without any counterweights. This bar is intended for users with heavier telescopes, such as larger refractors, Newtonians, or SCTs, especially when adding cameras and other imaging accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use third-party counterweight shafts with my iOptron HEM27 or HEM44 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is strongly recommended to use the official \u003cstrong\u003eiOptron HEM27\/HEM44 Counterweight Bar\u003c\/strong\u003e. This ensures proper threading, fit, and compatibility with the mount's design. Using third-party accessories may result in an insecure fit or damage to the mount's threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does adding counterweights with the iOptron HEM27\/HEM44 bar improve astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eProperly balancing your telescope with counterweights significantly improves tracking accuracy. It reduces the workload on the mount's motors, leading to smoother guiding, rounder stars, and the ability to capture sharper long-exposure images of deep-sky objects like the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the correct counterweight bar for the iOptron HAE series mounts?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This counterweight bar is specifically designed for the \u003cstrong\u003eiOptron HEM27 and HEM44\u003c\/strong\u003e mounts. The HAE series mounts require their own specific counterweight bar, as the mounting threads and design are different.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron HEM27, HEM44 Mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHEM27\/HEM44 Counterweight Bar\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":48603563753757,"sku":"IOP-8456SL","price":63.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/IOP-8456SL.jpg?v=1717695215"},{"product_id":"ioptron-stainless-steel-extension-bar-for-cem40-50-60-70-etc","title":"iOptron Stainless Steel Extension Bar for CEM40\/50\/60\/70\/etc.","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtends counterweight shaft length\u003c\/li\u003e\n\u003cli\u003eIncreases counterweight leverage\u003c\/li\u003e\n\u003cli\u003eAllows for balancing heavier payloads with fewer weights\u003c\/li\u003e\n\u003cli\u003eStainless steel construction for durability\u003c\/li\u003e\n\u003cli\u003eCompatible with iOptron CEM40, GEM45, CEM60, CEM70 and similar mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eiOptron Stainless Steel Extension Bar for CEM40\/50\/60\/70\/etc.\u003c\/h2\u003e\n      \u003cp\u003eThe iOptron Stainless Steel Extension Bar provides a simple and effective solution for balancing heavy or physically long telescope payloads on compatible iOptron mounts. By increasing the length of the counterweight shaft, this extension bar multiplies the effectiveness of your existing counterweights, allowing you to achieve perfect equilibrium without needing to purchase additional, heavy counterweights. This is a critical accessory for imagers using large refractors, Schmidt-Cassegrains, or heavy camera and guide scope configurations.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAchieve Critical Balance for Heavy Payloads\u003c\/h3\u003e\n      \u003cp\u003eWhen you mount a large optical tube or a heavy imaging train, achieving proper balance is essential for the tracking accuracy and health of your mount's drive gears. This stainless steel extension bar moves your counterweights further from the mount's axis of rotation, increasing their moment arm. This application of basic physics means a single counterweight can offset a much heavier payload, reducing the total weight your mount has to carry and improving overall stability.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA More Efficient Balancing Solution for iOptron Mounts\u003c\/h3\u003e\n      \u003cp\u003eInstead of stacking multiple counterweights close to the mount, the iOptron Extension Bar creates a more efficient and often lighter setup. This is particularly useful for portable rigs where minimizing total weight is a priority. The bar is machined from stainless steel to match the original counterweight shaft, ensuring a secure, corrosion-resistant connection that threads on seamlessly to mounts like the CEM40, GEM45, CEM60, and CEM70.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eReduced Total Mass:\u003c\/strong\u003e By increasing leverage, you can often remove one or more counterweights, lessening the load on the mount's bearings and motors.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eClearance for Long OTAs:\u003c\/strong\u003e For long refractors or Newtonian telescopes, moving the counterweights further down the shaft can prevent them from colliding with the tripod legs when pointed near the zenith.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e The stainless steel build ensures rigidity and longevity, preventing flexure that could compromise tracking.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhen do I need the iOptron Extension Bar for my CEM40 mount?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYou need the \u003cstrong\u003eiOptron Extension Bar\u003c\/strong\u003e when your telescope payload is heavy enough that your counterweights are slid all the way to the end of the standard shaft and you still cannot achieve balance. This often happens when using larger refractors or adding a heavy guide scope and camera to your imaging setup.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill adding the iOptron Extension Bar affect my mount's stability?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile the extension bar is made of rigid stainless steel, adding length to any shaft can potentially introduce a small amount of flexure or increase susceptibility to vibrations from wind. However, this effect is generally negligible compared to the significant benefit of achieving proper balance, which is far more critical for your mount's tracking performance and longevity.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this iOptron extension to balance a large SCT on my CEM70?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, absolutely. A large Schmidt-Cassegrain telescope, especially with a full imaging train attached, is a perfect use case for the \u003cstrong\u003eiOptron Extension Bar\u003c\/strong\u003e on a CEM70. It allows you to balance the payload with fewer counterweights, keeping the total carried weight lower and putting less strain on the mount.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the iOptron Extension Bar help more than just adding another counterweight?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAdding another counterweight increases the total mass the mount must move, which can lead to slower response times and more strain on the motors. The extension bar works smarter, not harder, by using \u003cstrong\u003eleverage\u003c\/strong\u003e. It increases the effectiveness of the weights you already own, allowing you to achieve balance with less overall mass on the mount.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat iOptron mounts is this Stainless Steel Extension Bar compatible with?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis extension bar is designed for iOptron mounts that use the standard counterweight shaft thread. This includes popular models such as the \u003cstrong\u003eCEM40, GEM45, CEM60, and CEM70\u003c\/strong\u003e, among others. It is intended to be a direct fit for these series of mounts.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs installation of the iOptron Extension Bar difficult?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, installation is very simple. You first remove the toe-saver\/end cap from your existing counterweight shaft. Then, you simply thread the extension bar securely onto the end of the shaft. Finally, re-attach the toe-saver to the end of the newly installed extension bar.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron CEM40, GEM45, CEM60, CEM70, and similar mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eStainless Steel Counterweight Shaft Extension Bar\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":49085581394205,"sku":"IOP-8026","price":109.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/8026-2T.jpg?v=1724769694"},{"product_id":"ioptron-8459","title":"iOptron HAZ46 Counterweight Shaft \u0026 Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables counterweight use on the iOptron HAZ46 mount\u003c\/li\u003e\n\u003cli\u003eImproves balance for heavy or long optical tubes\u003c\/li\u003e\n\u003cli\u003eReduces strain on the strain wave drive system\u003c\/li\u003e\n\u003cli\u003eIncreases tracking stability for astrophotography\u003c\/li\u003e\n\u003cli\u003eOfficial iOptron accessory for guaranteed fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eHAZ46 Counterweight Shaft \u0026amp; Adapter\u003c\/h2\u003e\n\u003cp\u003eUnlock the full potential of your iOptron HAZ46 mount with the HAZ46 Counterweight Shaft \u0026amp; Adapter. This essential accessory allows you to perfectly balance heavier or physically long telescope payloads, reducing strain on the harmonic drive and significantly improving tracking stability for critical imaging applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBalancing Demanding Payloads on the iOptron HAZ46\u003c\/h3\u003e\n\u003cp\u003eWhile the iOptron HAZ46 mount is engineered for counterweight-free operation with many setups, large instruments like long-focal-length refractors or SCTs with heavy camera trains can exceed the mount's inherent balancing capacity. Adding a counterweight provides the necessary counterbalance to prevent undue stress on the drive gears, ensuring smoother, more precise tracking across the sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFactory-Spec Design for Secure Integration\u003c\/h3\u003e\n\u003cp\u003eAs a genuine iOptron accessory, the HAZ46 Counterweight Shaft \u0026amp; Adapter is designed to integrate seamlessly with your mount. The components provide a rigid, secure connection, eliminating any flexure or wobble that could compromise your imaging data. This ensures your entire setup remains stable and performs as a single, cohesive unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I need a counterweight for the HAZ46 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eStrain wave gear mounts like the \u003cstrong\u003eiOptron HAZ46\u003c\/strong\u003e operate without counterweights for many payloads. However, for optical tubes that are particularly heavy or have a long moment arm (like a large refractor), adding a counterweight improves stability, reduces load on the drive motors, and can lead to more accurate tracking for long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the HAZ46 Counterweight Shaft necessary for imaging with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your imaging train. An 8\" SCT by itself may not require it, but if you add a heavy cooled camera, filter wheel, and off-axis guider, the total weight and its distribution can create an imbalance. The \u003cstrong\u003eHAZ46 Counterweight Shaft\u003c\/strong\u003e allows you to perfectly balance this heavier configuration for optimal tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill adding the HAZ46 Counterweight Shaft make my setup less portable?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, adding the shaft and one or more counterweights will increase the total weight of your setup. This is a direct trade-off for achieving better balance and stability with larger telescopes. The shaft itself is lightweight and can be easily removed for transport, but the counterweights themselves add significant mass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat counterweights fit the HAZ46 Counterweight Shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis shaft is designed to be compatible with standard iOptron counterweights. Please refer to your mount's documentation to ensure you select a counterweight with the correct bore diameter for the shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging with a 120mm f\/7 refractor on my HAZ46. Would this help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. A 120mm refractor, especially with a dew shield and a full imaging rig, creates a long moment arm. The \u003cstrong\u003eHAZ46 Counterweight Shaft \u0026amp; Adapter\u003c\/strong\u003e is highly recommended in this scenario to provide a stable, balanced platform, which is critical for achieving sharp, round stars during long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the HAZ46 Counterweight Shaft \u0026amp; Adapter include the actual counterweights?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This product includes only the counterweight shaft and the adapter needed to attach it to the HAZ46 mount. Counterweights must be purchased separately based on the needs of your specific telescope payload.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron HAZ46 Strain Wave Gear Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCounterweight Shaft\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMount Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917273723165,"sku":"IOP-8459","price":203.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-HAZ46-Counterweight-Shaft-Adapter-1_fe986cef-b3de-4932-848d-9b9ab352710d.jpg?v=1789141676"},{"product_id":"ioptron-7326ll","title":"iOptron 10kg Counterweight for CEM120 (Low Latitude)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e10kg Counterweight\u003c\/li\u003e\n\u003cli\u003eDesigned for iOptron CEM120 Mounts\u003c\/li\u003e\n\u003cli\u003eOptimized for use at latitudes below 10°\u003c\/li\u003e\n\u003cli\u003ePrevents collision with tripod or pier legs\u003c\/li\u003e\n\u003cli\u003eOEM iOptron Accessory (7326LL)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron 10kg Counterweight for CEM120 (Low Latitude)\u003c\/h2\u003e\n\u003cp\u003eThis iOptron 10kg counterweight (7326LL) is the specific solution required for balancing heavy payloads on iOptron CEM120 mounts operating at latitudes below 10°. Its specialized, compact design provides essential clearance between the counterweight and the tripod or pier, a critical factor when the counterweight shaft is nearly horizontal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolving the 10° Latitude Clearance Problem for the CEM120\u003c\/h3\u003e\n\u003cp\u003eOn a German Equatorial Mount, as your observing latitude approaches the equator, the polar axis becomes more horizontal. This causes the counterweight shaft to swing lower, increasing the risk of a standard-diameter counterweight colliding with the tripod legs. This 10kg low-latitude counterweight is engineered with a smaller physical diameter to provide the necessary clearance, ensuring safe, full-range motion for your CEM120 mount in equatorial locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e10kg of Stable Mass for Heavy Imaging Payloads\u003c\/h3\u003e\n\u003cp\u003eAchieving perfect balance is fundamental to the sub-arcsecond tracking of the CEM120. This 10kg weight allows you to precisely balance heavy optical tubes and imaging trains, minimizing stress on the drive motors and enabling the mount to deliver its peak tracking accuracy. As an official iOptron accessory (7326LL), it is manufactured to match the fit and finish of your mount, featuring a secure locking knob that ensures it remains firmly in place throughout an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a special low-latitude counterweight for my iOptron CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen using a CEM120 mount near the equator (at latitudes below 10°), the counterweight shaft hangs at a very low, almost horizontal angle. A standard counterweight's diameter is often too large, causing it to collide with the tripod or pier legs during slewing. This specialized \u003cstrong\u003eiOptron 10kg low-latitude counterweight\u003c\/strong\u003e has a more compact physical profile specifically to prevent this collision and allow for unrestricted movement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the iOptron 7326LL counterweight at higher latitudes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. While it is designed to solve a problem unique to low latitudes, the counterweight functions perfectly well at any latitude. If you travel with your CEM120 or simply prefer its form factor, it will provide 10kg of counterbalance regardless of your location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAt what latitude does the standard iOptron CEM120 counterweight become a problem?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis counterweight is specifically recommended for observers operating their CEM120 mount at latitudes of \u003cstrong\u003eless than 10 degrees\u003c\/strong\u003e. Above this threshold, a standard counterweight typically has sufficient clearance from the tripod or pier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this 10kg iOptron counterweight compatible with other mounts like the CEM70?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this counterweight is designed specifically for the counterweight shaft diameter of the \u003cstrong\u003eiOptron CEM120 series\u003c\/strong\u003e mounts. It will not fit smaller mounts like the CEM70, GEM45, or CEM40, which use a different shaft diameter. Always use counterweights designed for your specific mount model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many 10kg low-latitude counterweights do I need for my CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe number of counterweights depends entirely on your payload weight. A common rule of thumb is to match the weight of your optical tube, camera, and all accessories. For a 20kg telescope setup, you would typically require two of these 10kg counterweights for proper balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 7326LL counterweight attach to the CEM120 shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron 10kg Low Latitude counterweight slides onto the CEM120's counterweight shaft and is secured in place by a large, tool-free locking knob. This allows for quick, secure adjustments along the shaft to achieve perfect balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003e7326LL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Mount\u003c\/td\u003e\n\u003ctd\u003eiOptron CEM120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eObserving at latitudes below 10°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eiOptron 10kg Counterweight for CEM120 (Low Latitude)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron_CEM120_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917274247453,"sku":"IOP-7326LL","price":319.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-CW-10kg-for-CEM120-Low-Latitude-1_fee49b84-a488-4df6-a7a5-b39d89565a1f.jpg?v=1789141693"},{"product_id":"ioptron-8457","title":"iOptron Counterweight Shaft Extension Bar for CEM26 \u0026 GEM28","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtends Counterweight Shaft Length\u003c\/li\u003e\n\u003cli\u003eDesigned for iOptron CEM26 and GEM28 Mounts\u003c\/li\u003e\n\u003cli\u003eEnables Balancing of Heavier or Longer Telescopes\u003c\/li\u003e\n\u003cli\u003eReduces the Need for Additional Heavy Counterweights\u003c\/li\u003e\n\u003cli\u003eLowers Total System Weight for Increased Portability\u003c\/li\u003e\n\u003cli\u003eOfficial iOptron Accessory for Guaranteed Fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron Counterweight Shaft Extension Bar for CEM26 \u0026amp; GEM28\u003c\/h2\u003e\n\u003cp\u003eThe iOptron Counterweight Shaft Extension Bar is the official accessory for achieving optimal balance on your CEM26 or GEM28 mount when using larger or heavier optical tubes. By increasing the lever arm for your counterweights, this extension allows you to balance demanding payloads with fewer, lighter weights, preserving the portability of your CEM26 or GEM28 setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIncrease Balancing Efficiency for iOptron CEM26 \u0026amp; GEM28 Mounts\u003c\/h3\u003e\n\u003cp\u003eThis counterweight shaft extension addresses a common challenge in astrophotography: balancing a heavy imaging rig on a portable mount. Instead of adding more counterweights—and thus more total mass for the mount to carry—this bar uses the principle of leverage to make your existing weights more effective.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalance Heavier Telescopes:\u003c\/strong\u003e Securely balance longer refractors or Schmidt-Cassegrains equipped with heavy cameras and guide scopes, which would otherwise be impossible to balance on the standard shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduce Total System Weight:\u003c\/strong\u003e By moving your counterweights further from the mount's axis, you can achieve equilibrium with less mass. This keeps your field setup lighter and easier to transport and assemble.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial iOptron Design:\u003c\/strong\u003e As a genuine iOptron part, this extension bar guarantees perfect threading, a secure fit, and seamless integration with your CEM26 or GEM28 mount's counterweight shaft and safety stop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen do I need the iOptron Counterweight Shaft Extension for my CEM26 or GEM28 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the extension bar when your telescope is too heavy to balance with your existing counterweights positioned at the very end of the standard shaft. This is a common issue when using physically long refractors or heavier telescopes like SCTs, especially with a full imaging train attached.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the CEM26\/GEM28 Extension Bar let me use fewer counterweights?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, in many cases. By increasing the distance of the counterweight from the mount's axis of rotation, it multiplies the balancing force (torque). This allows you to balance the same telescope with less counterweight mass, reducing the overall weight your mount has to carry and slew.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm trying to balance an 8\" SCT on my GEM28 mount for imaging. Is this extension bar the right solution?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a perfect use case for the extension bar. An 8\" SCT with a camera, guide scope, and other accessories often requires more balancing torque than standard counterweights can provide on the default shaft. The CEM26\/GEM28 extension bar provides the extra leverage needed for a precise and secure balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the CEM26\/GEM28 Extension Bar to balance a long 102mm refractor on my CEM26?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. Long refractors create a significant moment arm that can be difficult to counteract. The extension bar is designed specifically for this situation, allowing you to properly balance the telescope's length and weight without having to purchase and transport extra-heavy counterweights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this an official iOptron accessory for the CEM26 and GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the official iOptron counterweight shaft extension manufactured specifically for the CEM26 and GEM28 series mounts. This ensures a perfect fit, correct threading, and safe, reliable operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of using the CEM26\/GEM28 Extension Bar versus just buying a heavier counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is reducing the total weight you need to transport and load onto your mount. While a heavier weight also achieves balance, the extension bar lets you do so with lighter weights you may already own. This makes your entire setup more portable and puts less total stress on the mount's motors and bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917276410141,"sku":"IOP-8457","price":45.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-CEM26-GEM28-Ext-Bar-1_ef310102-8e39-46d0-8a00-b3f6fff71d96.jpg?v=1789141753"},{"product_id":"ioptron-3324","title":"iOptron SkyTracker Pro Counterweight Package (3324)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables balancing of heavier camera and lens combinations\u003c\/li\u003e\n\u003cli\u003eImproves tracking accuracy by reducing motor strain\u003c\/li\u003e\n\u003cli\u003eAttaches directly to the iOptron SkyTracker Pro mount\u003c\/li\u003e\n\u003cli\u003eEssential for telephoto astrophotography\u003c\/li\u003e\n\u003cli\u003eIncreases overall stability of your imaging setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSkyTracker Pro Counterweight Package (3324)\u003c\/h2\u003e\n\u003cp\u003eThe iOptron SkyTracker Pro Counterweight Package (3324) is the definitive solution for photographers using heavier camera and telephoto lens systems on their star tracker. By perfectly balancing the payload on the Right Ascension axis, this kit mitigates stress on the drive motor. This directly translates to improved tracking accuracy, reduced periodic error, and ultimately, sharper, rounder stars in your long-exposure images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMaximize Stability for the SkyTracker Pro with Heavier Lenses\u003c\/h3\u003e\n\u003cp\u003eWhen you use a large telephoto lens or a heavier full-frame DSLR, the center of gravity shifts, placing significant torque on the SkyTracker Pro's motor. An imbalanced load forces the motor to work harder, which can introduce tracking errors that blur your images. This counterweight package solves that problem by providing an opposing mass, creating a finely balanced system that rotates smoothly and effortlessly.\u003c\/p\u003e\n\u003cp\u003eA properly balanced setup not only yields better tracking but also enhances the overall stability of your rig, making it less susceptible to vibrations from wind or shutter movement. It is the single most effective upgrade for pushing the imaging capabilities of your SkyTracker Pro beyond lightweight, wide-angle lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the SkyTracker Pro Counterweight Package?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis package is designed to balance the weight of your camera and lens on the iOptron SkyTracker Pro. By adding a counterweight opposite your equipment, you reduce the strain on the mount's motor, which leads to more accurate tracking and sharper astrophotos, especially with heavy telephoto lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen should I use this counterweight package with my SkyTracker Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou should consider this package when your imaging setup approaches the upper end of the SkyTracker Pro's payload capacity. It is highly recommended if you are using:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong telephoto lenses\u003c\/strong\u003e (e.g., 200mm, 300mm, or 400mm)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeavier full-frame DSLR or mirrorless cameras\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eAny combination where the camera feels \"top-heavy\" or difficult to secure on the ball head.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does balancing my SkyTracker Pro improve my astrophotos of objects like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eImaging a large target like the Andromeda Galaxy (M31) with a telephoto lens requires precise, smooth tracking over long exposures. An imbalanced SkyTracker Pro will exhibit small tracking errors that cause stars to appear elongated or trailed. By balancing the load with this counterweight package, you ensure the motor operates with minimal effort, resulting in rounder stars and sharper details in the galaxy's dust lanes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a small telescope on the SkyTracker Pro with this counterweight package?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile this package significantly improves stability, the SkyTracker Pro is primarily designed for camera and lens combinations. Mounting a telescope, even a small one, introduces issues with leverage and balancing that may exceed the mount's capabilities. This kit is optimized for DSLR\/mirrorless cameras, not optical tube assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this counterweight package compatible with other iOptron mounts?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the iOptron SkyTracker Pro Counterweight Package (3324) is specifically engineered for the SkyTracker Pro model. It is not designed to be compatible with other iOptron trackers like the SkyGuider Pro or larger German Equatorial Mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this package include the counterweight and the shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, a counterweight package typically includes the counterweight itself, the shaft it slides onto, and any necessary hardware to attach it to the mount. It provides a complete solution for balancing your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePricing\u003c\/td\u003e\n\u003ctd\u003eRegular price: $ 85.00; Sale price: $ 85.00 Sale; Unit price: \/per\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917284045085,"sku":"IOP-3324","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-SkyTracker-Pro-Counterweight-Package-3324-1_fa86e000-49a9-46fb-b192-b5e65e4199ce.jpg?v=1789141874"},{"product_id":"ioptron-p-sgp-cws","title":"iOptron Counterweight Shaft for iOptron SGP and HAE Mounts","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e200mm (7.875 in.) extended length\u003c\/li\u003e\n\u003cli\u003eStandard 20mm (0.79 in.) diameter\u003c\/li\u003e\n\u003cli\u003eFits iOptron SkyGuider Pro and HAE mounts\u003c\/li\u003e\n\u003cli\u003eDual 3\/8\"-16 threads for extension\u003c\/li\u003e\n\u003cli\u003eIncludes essential safety screw\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eCounterweight Shaft for iOptron SGP and HAE Mounts\u003c\/h2\u003e\n      \u003cp\u003eThe iOptron Counterweight Shaft for SGP and HAE extends your mount's balancing capability with a total length of 200mm and a standard 20mm diameter compatible with iOptron counterweights. Weighing 1 lb, this steel shaft features a 3\/8\"-16 thread on both ends for potential extension and includes a critical safety screw to prevent counterweight slippage.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eExtended 200mm Length for Heavier Payloads\u003c\/h3\u003e\n      \u003cp\u003eWhen you upgrade your portable setup with a heavier telephoto lens or add a guidescope, achieving perfect balance is critical for sharp, un-trailed images. This 200mm shaft provides the extra length needed to increase leverage, allowing you to balance heavier camera rigs on your SkyGuider Pro or HAE mount effectively. This means you can use your existing counterweights or fewer weights overall to achieve stable tracking.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eSecure Fit: 20mm Diameter with Included Safety Screw\u003c\/h3\u003e\n      \u003cp\u003eEngineered to match iOptron's standard, the shaft's 20mm diameter ensures a perfect fit for all SkyGuider Pro and HAE-compatible counterweights. A key feature is the included safety screw at the end of the shaft, which acts as a stop to prevent a counterweight from accidentally sliding off during setup or adjustment. For maximum flexibility, the shaft is threaded with a 3\/8\"-16 thread on both ends, allowing you to connect two shafts for extreme payloads.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat mounts is the iOptron 200mm counterweight shaft compatible with?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis counterweight shaft is designed specifically for iOptron's \u003cstrong\u003eSkyGuider Pro (SGP)\u003c\/strong\u003e and \u003cstrong\u003eHAE series\u003c\/strong\u003e equatorial mounts, featuring a standard 20mm diameter.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I need this 200mm shaft for my SkyGuider Pro?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYou need the extended 200mm shaft when your imaging payload becomes too heavy or long to balance with the stock shaft. This typically occurs when using larger telephoto lenses or adding a secondary guidescope and camera, where the extra leverage from the longer shaft is required for proper balance and tracking accuracy.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this iOptron shaft with non-iOptron counterweights?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, you can use any counterweight with this shaft, provided the counterweight has a central bore hole with a \u003cstrong\u003ediameter of 20mm\u003c\/strong\u003e to match the shaft.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the thread size on the iOptron SGP\/HAE shaft?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe shaft features a standard \u003cstrong\u003e3\/8\"-16 thread\u003c\/strong\u003e on both ends. This allows the included safety screw to be attached and also enables the possibility of screwing two shafts together for even greater length.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI'm using a small refractor on my SkyGuider Pro. Is this 200mm shaft necessary?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFor a small, heavy refractor like a William Optics RedCat 51, especially with a guide scope attached, the standard counterweight shaft may not provide enough leverage. The 200mm shaft allows you to position the counterweight further out, achieving a perfect balance which is critical for the long-exposure astrophotography these setups are used for.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I connect two of these iOptron 200mm shafts together for a heavy setup on my HAE mount?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. Because the shaft has a 3\/8\"-16 thread on both ends, you can directly connect a second shaft to the first for a combined 400mm of length. This provides extreme leverage for balancing heavy or physically long optical tubes, but you must always ensure your total payload remains under the specified weight capacity of your HAE mount.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron SkyGuider Pro, HAE Mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e20 mm (0.79 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e200 mm (7.875 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003e3\/8\"-16 (both ends)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSafety Feature\u003c\/td\u003e\n\u003ctd\u003eIncluded Safety Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917284536605,"sku":"IOP-P-SGP-CWS","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-Counterweight-shaft-for-SGP-and-HAE-1_667968cd-f42c-40f2-b062-ed7356720bbe.jpg?v=1789141888"},{"product_id":"ioptron-3106-02","title":"iOptron 1kg Counterweight for SmartEQ","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eWeight: ~1 kg (2 lbs)\u003c\/li\u003e\n\u003cli\u003eInner Diameter: 16.1 mm for SmartEQ shafts\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 78.6 mm\u003c\/li\u003e\n\u003cli\u003eCompatibility: iOptron SmartEQ \u0026amp; SmartEQ-Pro Mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003e1kg Counterweight for SmartEQ\u003c\/h2\u003e\n\u003cp\u003eThe iOptron 1kg Counterweight for SmartEQ mounts is the specific tool for balancing light astronomical payloads. Weighing approximately 1 kg (2 lbs), this counterweight has an outer diameter of 78.6 mm and a height of 25.8 mm. Its 16.1 mm inner diameter is machined to fit the counterweight shaft of the iOptron SmartEQ and SmartEQ-Pro mounts, ensuring smooth, accurate tracking with small telescopes or camera lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBalancing Lightweight Payloads at ~1 kg\u003c\/h3\u003e\n\u003cp\u003eStandard counterweights are often too heavy for ultra-portable setups like small wide-field refractors or a DSLR with a telephoto lens. A heavier weight forces you to slide it all the way up the shaft, often failing to achieve proper equilibrium and stressing the mount's motors. This 1 kg (~2 lbs) counterweight supplies the correct mass to precisely balance these lighter payloads, ensuring your mount tracks accurately without strain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 16.1 mm Bore for iOptron SmartEQ Mounts\u003c\/h3\u003e\n\u003cp\u003eA counterweight's compatibility is dictated by its inner diameter. This weight is built with a precisely machined 16.1 mm (0.63 in.) bore, ensuring a secure fit on the counterweight shaft of iOptron's SmartEQ and SmartEQ-Pro mounts. With an outer diameter of 78.6 mm and a height of 25.8 mm, it is a compact and effective balancing solution for your grab-and-go rig.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the 1kg counterweight for my William Optics RedCat 51 on a SmartEQ-Pro mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal use case. A lightweight, wide-field telescope like the RedCat 51 is often too light to balance properly with standard, heavier counterweights. This \u003cstrong\u003e1 kg weight\u003c\/strong\u003e allows you to achieve perfect balance without having the weight pushed all the way to the top of the counterweight shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm using a DSLR with a 200mm lens on my SmartEQ. Is this 1kg weight the right choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. A DSLR and lens combination typically weighs only a few pounds, making the standard counterweight too heavy. The \u003cstrong\u003e1 kg (~2 lbs) counterweight\u003c\/strong\u003e is designed specifically for these types of lightweight imaging rigs, preventing motor strain and improving tracking accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1kg counterweight fit other iOptron mounts like the SkyGuider Pro or GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This counterweight is specifically designed for the \u003cstrong\u003eiOptron SmartEQ and SmartEQ-Pro\u003c\/strong\u003e mounts. Its \u003cstrong\u003e16.1 mm inner diameter\u003c\/strong\u003e matches the counterweight shaft on those models. Other mounts, like the SkyGuider Pro or GEM28, use different shaft diameters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the inner diameter of the SmartEQ 1kg counterweight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe inner diameter (bore) is \u003cstrong\u003e16.1 mm (0.63 inches)\u003c\/strong\u003e. This is the critical dimension that ensures it fits securely on the counterweight shaft of your SmartEQ or SmartEQ-Pro mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy not just use a heavier weight slid further up the counterweight shaft for my SmartEQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile possible in some cases, it provides poor balance. A heavier weight positioned very close to the mount's axis has less rotational inertia and provides less effective, coarser balancing adjustments. A lighter weight placed further down the shaft offers finer control and a more stable equilibrium, which is critical for accurate GOTO slews and tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this an official iOptron counterweight for the SmartEQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the official 1 kg counterweight manufactured by iOptron for its SmartEQ and SmartEQ-Pro series mounts, ensuring a perfect fit and finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~1 kg (2 lbs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter\u003c\/td\u003e\n\u003ctd\u003e16.1 mm (0.63 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e78.6 mm (3 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e25.8 mm (1 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e2.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e6.25 x 3.75 x 1.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1kg Counterweight for SmartEQ\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917301575965,"sku":"IOP-3106-02","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-1kg-Counterweight-for-SmartEQ-1_b544ad5d-0e97-463a-88b7-dd15982dfb12.jpg?v=1789142353"},{"product_id":"ioptron-7126","title":"iOptron ZEQ25\/CEM25 Counterweight Shaft Extension Bar","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtends Counterweight Shaft Length\u003c\/li\u003e\n\u003cli\u003eIncreases Balancing Leverage\u003c\/li\u003e\n\u003cli\u003eAllows for Heavier Telescope Payloads\u003c\/li\u003e\n\u003cli\u003eCompatible with iOptron ZEQ25 Mounts\u003c\/li\u003e\n\u003cli\u003eCompatible with iOptron CEM25 Mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eiOptron ZEQ25\/CEM25 Counterweight Shaft Extension Bar\u003c\/h2\u003e\n\u003cp\u003eIncrease the payload capability of your iOptron ZEQ25 or CEM25 mount with the official Counterweight Shaft Extension Bar. This simple accessory provides greater leverage, allowing you to balance heavier or longer optical tubes on your ZEQ25 or CEM25 mount, often without needing to purchase additional, heavy counterweights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIncrease Balancing Capacity for ZEQ25\/CEM25 Mounts\u003c\/h3\u003e\n\u003cp\u003eBy extending the length of the counterweight shaft on your ZEQ25 or CEM25, this bar increases the moment arm for your counterweights. This gives each weight more leverage, enabling you to achieve perfect balance with heavier telescope payloads that might otherwise be a challenge for the mount. It can also allow you to balance your existing setup with less counterweight, reducing the total weight you carry to your observing site.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the ZEQ25\/CEM25 Counterweight Shaft Extension Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose of the ZEQ25\/CEM25 Ext Bar is to increase the leverage of your existing counterweights. By moving the weights further from the mount's axis of rotation, you can balance a heavier telescope or use fewer counterweights for your current setup, making your rig more efficient and often lighter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this extension bar compatible with mounts other than the iOptron ZEQ25 and CEM25?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this counterweight shaft extension is specifically designed and threaded for the iOptron ZEQ25 and CEM25 series of equatorial mounts. It is not compatible with other iOptron models or mounts from other brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy ZEQ25 mount can't quite balance my new 80mm refractor. Will this Ext Bar help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the ideal scenario for the extension bar. If your telescope is only slightly too heavy for your counterweight, adding the ZEQ25\/CEM25 Ext Bar will likely provide the extra leverage needed to achieve perfect balance without the expense and weight of an additional counterweight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ZEQ25\/CEM25 Ext Bar help reduce the total weight of my setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. If you are currently using two counterweights to balance your telescope, the added leverage from the extension bar may allow you to achieve the same balance with just one of those counterweights, thereby reducing the overall weight of your mount setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy CEM25 mount struggles to balance my 6-inch Newtonian for astrophotography. Is this extension bar a good solution?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZEQ25\/CEM25 Ext Bar is a critical first step. Proper balance is essential for accurate tracking in astrophotography. A 6-inch Newtonian is often at the upper end of the mount's capacity, and this extension provides the necessary mechanical advantage to properly balance longer or heavier optical tubes for better imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the iOptron ZEQ25\/CEM25 Ext Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward. You simply unthread the toe-saver stop from the end of your mount's existing counterweight shaft, thread the extension bar on securely, and then re-attach the toe-saver to the end of the new extension bar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Compatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron ZEQ25, iOptron CEM25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZEQ25\/CEM25 Counterweight Shaft Extension Bar\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917302395165,"sku":"IOP-7126","price":42.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-ZEQ25-CEM25-Ext-Bar-1_7db8f21f-1bc6-4d9b-b8a1-ebe2e6f672f3.jpg?v=1789142374"},{"product_id":"ioptron-8607","title":"iOptron Cube Counterweight shaft","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e150mm (5.9 in.) Length\u003c\/li\u003e\n\u003cli\u003e19mm (0.74 in.) Diameter\u003c\/li\u003e\n\u003cli\u003eM14 Female Thread\u003c\/li\u003e\n\u003cli\u003eWeight: 11 oz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCube Counterweight shaft\u003c\/h2\u003e\n\u003cp\u003eThis 150 mm (5.9 in.) long counterweight shaft is the essential accessory for properly balancing telescope setups on Cube-style alt-azimuth mounts. With a standard 19 mm (0.74 in.) diameter, it accepts common small counterweights and attaches securely to the mount head via its M14 female thread. The shaft itself weighs only 11 oz, adding minimal dead weight to your system before you add the counterweights needed for smooth, precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBalance Your Cube Mount: The 150mm Counterweight Shaft\u003c\/h3\u003e\n\u003cp\u003eWhen you add a camera, a heavy eyepiece, or a larger-than-stock telescope to a Cube mount, the system's balance point shifts. This shaft provides the necessary extension to attach counterweights, offsetting the primary payload. The 150 mm length creates sufficient leverage to balance typical instruments used on these mounts, preventing motor strain and improving GoTo accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompatibility Check: 19mm Diameter and M14 Thread\u003c\/h3\u003e\n\u003cp\u003eThis shaft is engineered to specific mechanical standards for a secure fit. The M14 female thread is designed to screw directly onto the corresponding male thread on compatible Cube mount heads. Its 19 mm diameter is a common standard for smaller counterweights, ensuring you can easily find weights to fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Cube Counterweight shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Cube Counterweight shaft allows you to add counterweights to a Cube-style mount. This is critical for balancing the telescope, especially after adding heavier accessories like a DSLR camera or a large 2\" eyepiece. Proper balance reduces strain on the mount's motors and gears, resulting in smoother tracking and more accurate GoTo slewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if this counterweight shaft will fit my mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe most important specification to check is the thread. This shaft uses an \u003cstrong\u003eM14 female thread\u003c\/strong\u003e. Your mount must have a corresponding M14 male threaded post for this shaft to attach correctly. Please verify your mount's specifications before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size counterweights fit on this 19mm shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis shaft has a \u003cstrong\u003ediameter of 19 mm (0.74 in.)\u003c\/strong\u003e. It is compatible with any counterweight that has a center bore slightly larger than 19 mm. These are common sizes for smaller mounts and star trackers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a 90mm Maksutov-Cassegrain on my Cube mount. Do I need this counterweight shaft?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on how you are using it. For visual use with standard 1.25\" eyepieces, a 90mm Maksutov is usually light enough not to require counterweights. However, if you add a heavy 2\" diagonal, a large eyepiece, or a camera to the back, the scope will become back-heavy. In that scenario, this 150 mm shaft and a small counterweight would be necessary to restore balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Cube Counterweight shaft to balance a short-tube 80mm refractor with a camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal use case. An 80mm refractor, especially with a field flattener and DSLR or dedicated astronomy camera attached, creates a significant load that must be balanced. The 150 mm length of this shaft provides the leverage needed to offset that kind of imaging payload, ensuring your mount can track smoothly for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much total weight can the Cube Counterweight shaft hold?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe shaft itself is made of solid metal and is very strong. However, the total counterweight capacity is determined by your mount's payload rating, not the shaft itself. Always refer to your mount's manual for its maximum payload capacity and ensure your combined telescope and counterweight load does not exceed it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e19 mm (0.74 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e150 mm (5.9 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eM14 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e11 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCube Counterweight Shaft\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917303083293,"sku":"IOP-8607","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-Cube-Counterweight-shaft-1_7fa79336-dab8-4c5f-af6f-53f6de728e47.jpg?v=1789142382"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/ioptron-counterweights.oembed","provider":"David Astro","version":"1.0","type":"link"}