{"title":"iOptron CEM Center-Balanced Equatorial Mounts","description":"\u003cp\u003eiOptron CEM mounts are center-balanced equatorial mounts: the right ascension axis is arranged so the payload sits closer to the center of the tripod or pier, which improves stability and reduces the counterweight needed. The range covers the CEM26, CEM40, CEM70 and CEM120.\u003c\/p\u003e\u003cp\u003eMatching accessories include low-latitude counterweight shaft housings for the CEM26 and CEM40, a CEM120 pier top adapter and a CEM26 polar scope kit.\u003c\/p\u003e","products":[{"product_id":"ioptron-cem120-mount","title":"iOptron CEM120 Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePayload Capacity: 115 lbs (52 kg)\u003c\/li\u003e\n\u003cli\u003eMount Head Weight: 57 lbs (26 kg)\u003c\/li\u003e\n\u003cli\u003ePayload to Weight Ratio: 2:1\u003c\/li\u003e\n\u003cli\u003eDrive System: Precision Stepper Motor\u003c\/li\u003e\n\u003cli\u003eTracking Resolution: 0.07 arc seconds\u003c\/li\u003e\n\u003cli\u003eIntegrated WiFi, LAN, and GPS\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 CEM120 Mount\u003c\/h2\u003e\n\u003cp\u003eThe iOptron CEM120 Mount leverages its innovative Center-balanced Equatorial design to carry a massive 52 kg (115 lbs) payload on a mount head weighing just 26 kg (57 lbs), achieving an exceptional 2:1 payload-to-weight ratio. Its precision stepper motor drive provides a tracking resolution of 0.07 arc seconds, while the large Φ216mm, 360-tooth worm wheels in both axes ensure smooth, accurate slewing at up to 4° per second. With integrated GPS, WiFi, LAN, and a comprehensive cable management system featuring multiple DC power and USB 3.0 ports, the CEM120 is built from the ground up for remote observatory operation.\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\u003eCEM Design: A 115 lb Payload on a 57 lb Mount\u003c\/h3\u003e\n\u003cp\u003eThe core of the CEM120's capability is its Center-Balanced Equatorial Mount architecture. By positioning the payload's center of gravity directly over the pier's central axis, the design delivers exceptional stability and allows for a significantly higher payload capacity relative to its own weight. This makes the 26 kg (57 lbs) all-metal mount head capable of securely handling large optical tubes up to 52 kg (115 lbs), making it an ideal platform for observatory-class instruments.\u003c\/p\u003e\n\u003cp\u003eThe mount features robust, easy-to-use gear clutches and precision altitude and azimuth adjustment systems for accurate polar alignment across a wide 0° to 68° latitude range. A standard Losmandy D-style saddle provides a secure, non-slip connection for your telescope's dovetail bar, ensuring rigidity throughout your 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\u003ePrecision Drive System: 0.07 Arcsecond Resolution and PPEC\u003c\/h3\u003e\n\u003cp\u003eThe CEM120's drive train is engineered for uncompromising astrophotography. Massive Φ216mm, 360-tooth zero-backlash worm wheels are paired with a precision stepper motor drive system with 128 micro-steps, resulting in a tracking resolution of just 0.07 arc seconds. This fine control allows the mount to execute precise GoTo slews and track celestial objects with the accuracy needed for long-exposure imaging.\u003c\/p\u003e\n\u003cp\u003eEvery CEM120 model includes Permanent Periodic Error Correction (PPEC) to minimize the worm gear's inherent tracking errors. For the most demanding applications, high-resolution encoder-equipped versions (CEM120EC and CEM120EC2) are available, which actively correct tracking in real-time to deliver a periodic error of less than ±3.5 arc seconds.\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\u003eIntegrated Cable Management: 10+ Ports for a Tangle-Free Setup\u003c\/h3\u003e\n\u003cp\u003eCable drag and snagging are eliminated with the CEM120's advanced cable management system. A comprehensive array of ports is built directly into the mount saddle and central column, preventing wires from wrapping around the mount during slews. This through-the-mount routing is essential for reliable remote and automated observatory operation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Outputs:\u003c\/strong\u003e Two 12V\/5A DC ports and two 12V\/1A DC ports provide power for your camera, dew heaters, and other accessories right at the saddle plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Ports:\u003c\/strong\u003e Three USB 3.0 ports and two USB 2.0 ports handle high-speed camera data and guide camera connections without external hubs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Ports:\u003c\/strong\u003e An ST-4 guiding port, an auxiliary port, and connections for the optional iPolar electronic polar scope are all integrated.\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\u003eGo2Nova 8410 Controller: GPS, WiFi, and Remote Observatory Control\u003c\/h3\u003e\n\u003cp\u003eThe CEM120 includes the Go2Nova® 8410 controller, a powerful hub for mount operation. A built-in 32-channel GPS automatically inputs the date, time, and location for a fast and accurate setup. The mount also features an automatic zero search function to find its home position, ensuring repeatable and reliable startup every time.\u003c\/p\u003e\n\u003cp\u003eWhile the hand controller provides full access to all functions, the CEM120 is designed for modern computer control. With built-in WiFi and a dedicated LAN port, you can connect directly to the mount for full remote operation using your favorite planetarium software or automation programs like N.I.N.A. or Sequence Generator Pro, making it a perfect match for a backyard observatory.\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\u003eiOptron CEM120 vs. Sky-Watcher EQ8-R Pro: Design and Connectivity\u003c\/h3\u003e\n\u003cp\u003eIn the heavy-duty observatory class, the CEM120 is often compared to the Sky-Watcher EQ8-R Pro. While both mounts handle similar payloads, they achieve it with different design philosophies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSky-Watcher EQ8-R Pro Advantage:\u003c\/strong\u003e The EQ8-R Pro features a belt-drive system, which can provide very smooth tracking with low backlash. It also includes Freedom-Find dual encoders as a standard feature across all models, allowing for manual slewing without losing alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiOptron CEM120 Advantage:\u003c\/strong\u003e The CEM120's primary advantage is its superior payload-to-weight ratio of 2:1, making its 57 lb head significantly lighter and more manageable than the EQ8-R Pro's ~63 lb head for a similar 115 lb capacity. More importantly, the CEM120's integrated cable management system is far more advanced, offering a complete solution for power and data that eliminates cable wrap—a critical feature for remote imaging that the EQ8-R does not have integrated to the same degree.\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\"\u003eWhat is the main advantage of the iOptron CEM120's Center-balanced design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Center-balanced Equatorial Mount (CEM) design places the telescope's center of gravity directly over the pier. This creates a more naturally stable system, allowing the \u003cstrong\u003eiOptron CEM120\u003c\/strong\u003e to carry a heavy \u003cstrong\u003e115 lb (52 kg)\u003c\/strong\u003e payload on a relatively lightweight \u003cstrong\u003e57 lb (26 kg)\u003c\/strong\u003e mount head, achieving an industry-leading payload-to-weight ratio of 2:1.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much payload can the iOptron CEM120 handle for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron CEM120 has a maximum instrument capacity of \u003cstrong\u003e115 lbs (52 kg)\u003c\/strong\u003e, not including counterweights. This is more than enough to support large refractor or reflector systems, such as 14\" SCTs or 7\" refractors, complete with heavy imaging trains including cameras, filter wheels, and off-axis guiders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the CEM120, CEM120EC, and CEM120EC2 models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is the inclusion of high-precision encoders for real-time tracking correction.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM120:\u003c\/strong\u003e The standard model relies on its precision worm gear and Permanent Periodic Error Correction (PPEC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM120EC:\u003c\/strong\u003e Includes a high-resolution encoder on the Right Ascension (RA) axis, reducing periodic error to less than \u003cstrong\u003e±3.5 arc seconds\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM120EC2:\u003c\/strong\u003e Includes high-resolution encoders on both the Right Ascension (RA) and Declination (DEC) axes for the highest possible tracking and pointing accuracy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount a 14\" SCT like a Celestron C14 on the iOptron CEM120 for imaging galaxies like the Whirlpool Galaxy (M51)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. A typical C14 optical tube weighs around 45 lbs, leaving ample capacity within the CEM120's \u003cstrong\u003e115 lb limit\u003c\/strong\u003e for a full imaging setup (guide scope, camera, filter wheel, etc.). The mount's stability and precise tracking are ideal for capturing the fine spiral details in galaxies like M51, especially with one of the encoder-equipped versions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of tracking accuracy can I expect from the iOptron CEM120 with a heavy refractor at long focal lengths?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEven the standard iOptron CEM120 model provides excellent tracking for long-focal-length imaging through its PPEC system and ST-4 autoguiding port. For ultimate precision with a heavy, long-focal-length instrument, the \u003cstrong\u003eCEM120EC\u003c\/strong\u003e or \u003cstrong\u003eCEM120EC2\u003c\/strong\u003e models are recommended. Their high-resolution encoders actively correct for gear errors, delivering a native periodic error of under \u003cstrong\u003e±3.5 arc seconds\u003c\/strong\u003e, which minimizes guide corrections and produces exceptionally round stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the iOptron CEM120 require an external computer for GoTo operation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the included \u003cstrong\u003eGo2Nova® 8410 hand controller\u003c\/strong\u003e provides full GoTo functionality and access to the mount's entire object database. However, the mount is designed for advanced use with a computer. With built-in \u003cstrong\u003eWiFi and LAN ports\u003c\/strong\u003e, you can connect directly to the CEM120 for a more powerful and user-friendly experience with planetarium software.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply is required for the iOptron CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron CEM120 requires a stable \u003cstrong\u003eDC 12V, 5A\u003c\/strong\u003e power source. The mount consumes approximately 0.7A while tracking and up to 1.8A during high-speed GoTo slews. A robust power supply is critical for reliable performance.\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 Type\u003c\/td\u003e\n\u003ctd\u003eCenter-balanced Equatorial Mount (CEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload\u003c\/td\u003e\n\u003ctd\u003e52 kg (115 lbs), excluding counterweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Weight\u003c\/td\u003e\n\u003ctd\u003e26 kg (57 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload to Mount Weight Ratio\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAll metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e0° ~ 68° (0.5 arcmin division)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAzimuth Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e± 5° (3 arcmin division)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error (with Encoder)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; ±3.5 arcsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error Correction (PEC)\u003c\/td\u003e\n\u003ctd\u003ePPEC (Permanent PEC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Period\u003c\/td\u003e\n\u003ctd\u003e240 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ216mm, 360 teeth, zero backlash (RA \u0026amp; DEC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm\u003c\/td\u003e\n\u003ctd\u003eΦ26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRA\/DEC Axle\u003c\/td\u003e\n\u003ctd\u003eΦ80mm, steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRA\/DEC Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ125mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ38.1 x 540 mm, 4.5kg Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Counterweights\u003c\/td\u003e\n\u003ctd\u003e10 kg (22 lbs) x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Drive\u003c\/td\u003e\n\u003ctd\u003ePrecision stepper motor w\/ 128 micro-steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.07 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Slew Speed\u003c\/td\u003e\n\u003ctd\u003e4°\/sec (960x)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHand Controller\u003c\/td\u003e\n\u003ctd\u003eGo2Nova® 8410\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Saddle\u003c\/td\u003e\n\u003ctd\u003eLosmandy D-style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eDC 12V, 5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.7A (Tracking), 1.8A (GoTo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPS\u003c\/td\u003e\n\u003ctd\u003eYes, 32-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolar Scope\u003c\/td\u003e\n\u003ctd\u003eOptional iPolar electronic polar scope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuiding Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eRS232, USB, LAN, WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Management Ports\u003c\/td\u003e\n\u003ctd\u003e2x DC12V(1A), 2x DC(5A), ST4, 6P6C, 2x USB2.0, 3x USB3.0, USB for iPolar, AUX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C ~ +40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003eCEM120 (No encoder), CEM120EC (RA Encoder), CEM120EC2 (RA \u0026amp; DEC Encoders)\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\"\u003eCEM120 Mount Head\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\"\u003eGo2Nova 8410 Hand Controller\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\"\u003eHand Controller Cable\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\"\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\"\u003e10 kg (22 lbs) Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\"\u003eAccessory Package\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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.ioptron.com\/category-s\/133.htm\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\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":"CEM120 - No encoder","offer_id":44967924760861,"sku":"IOP-7300","price":7909.0,"currency_code":"CAD","in_stock":true},{"title":"CEM120EC - 1x Encoder (RA)","offer_id":44967924793629,"sku":"IOP-7301","price":10849.0,"currency_code":"CAD","in_stock":true},{"title":"CEM120EC2 - 2x Encoders (RA \u0026 DEC)","offer_id":44967924826397,"sku":"IOP-7302","price":13397.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-CEM120__32958.1636763381.1280.1280.jpg?v=1684347081"},{"product_id":"ioptron-cem70-mount","title":"iOptron CEM70 Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e70 lbs (31.8 kg) payload on a 30 lbs (13.6 kg) mount head, 2.33 payload-to-weight ratio\u003c\/li\u003e\n\u003cli\u003eCenter-balanced equatorial mount (CEM) design with Φ151mm worm wheels and Φ55mm steel axles\u003c\/li\u003e\n\u003cli\u003ePeriodic error \u0026lt; ±5 arcsec with PPEC (CEM70); \u0026lt; 0.3 arcsec RMS with encoders (EC and EC2 versions)\u003c\/li\u003e\n\u003cli\u003eIntegrated iPolar electronic polar scope and built-in 32-channel GPS\u003c\/li\u003e\n\u003cli\u003eThrough-the-mount cable management; WiFi \u0026amp; USB 3.0 on W versions, 19V\/LAN\/USB NUC ports on NUC versions\u003c\/li\u003e\n\u003cli\u003eGo2Nova 8410 GoTo controller, 9.5 kg (20 lbs) counterweight and hard case with every version\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 CEM70 Mount\u003c\/h2\u003e\n\u003cp\u003eThe iOptron CEM70 carries a 70 lb (31.8 kg) imaging payload on a mount head that weighs only 30 lbs (13.6 kg), a 2.33 payload-to-weight ratio built on massive Φ151mm worm wheels, Φ55mm steel axles and Φ80mm bearings. It is offered in several versions to match how you image: the standard CEM70 with Permanent PEC and a periodic error below ±5 arcseconds, the CEM70EC with a high-resolution Right Ascension encoder, and the CEM70EC2 with encoders on both axes, the EC and EC2 both tracking to less than 0.3 arcseconds RMS. Each family is available with built-in WiFi \u0026amp; USB 3.0 or with Intel NUC integration, and the standard CEM70 is also offered with the iGuider. Every version shares the integrated iPolar, GPS, Go2Nova 8410 controller, 9.5 kg counterweight and hard case.\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\u003e70 lb Payload on a 30 lb Center-Balanced Frame\u003c\/h3\u003e\n\u003cp\u003eThe CEM70's center-balanced design positions the payload's center of gravity directly over the tripod's or pier's central axis, giving it greater natural stability than a traditional German equatorial mount and requiring less counterweight to balance a heavy optical tube. This lets the all-metal mount support a 70 lb (31.8 kg) imaging system on a head that weighs just 30 lbs (13.6 kg). Φ55mm steel axles running in Φ80mm bearings on both axes and an 8\" Losmandy D \u0026amp; Vixen dual saddle provide a rigid, flexure-free platform for 11\" SCTs, large refractors and long-focal-length reflectors with a full imaging train.\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\u003eFrom \u0026lt; ±5 Arcsec PPEC to \u0026lt; 0.3 Arcsec RMS Encoder Tracking\u003c\/h3\u003e\n\u003cp\u003eEvery CEM70 shares the same drive train: Φ151mm, 248-tooth worm wheels with Φ21.2mm worms and a 348-second worm period, turned by precision stepper motors with 128 micro-steps for a 0.07 arcsecond resolution and slews of up to 3.75°\/sec (900x). What changes between versions is how tracking error is corrected.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70:\u003c\/strong\u003e Permanent Periodic Error Correction (PPEC) keeps periodic error below ±5 arcseconds, an excellent, responsive base for autoguided imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70EC:\u003c\/strong\u003e A high-resolution encoder on the Right Ascension axis drives Real-time PEC (RPEC), measuring and correcting worm gear error as it happens for a periodic error of less than 0.3 arcseconds RMS, with no PEC training required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70EC2:\u003c\/strong\u003e Adds a second high-resolution encoder on the Declination axis, so both axes are monitored in real time while keeping the same \u0026lt; 0.3 arcsecond RMS periodic error.\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\u003eIntegrated iPolar, 32-Channel GPS and Go2Nova 8410 Control\u003c\/h3\u003e\n\u003cp\u003eSetting up for an imaging session is dramatically simplified with the built-in iPolar electronic polar scope. Its internal camera and software plate-solve the star field around the celestial pole and guide your altitude and azimuth adjustments on a computer screen, typically reaching a precise polar alignment in a few minutes without kneeling behind the mount, even if Polaris itself is partially obstructed. The internal 32-channel GPS enters your location, date and time automatically, and the Go2Nova 8410 hand controller with its 8-line, 21-character LCD handles alignment, GoTo and automatic meridian flips, while an ST-4 port and ASCOM driver support control from your imaging software.\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\u003eCable Management: 3 USB Ports on the Saddle, or 19V NUC Power\u003c\/h3\u003e\n\u003cp\u003eCable snags are a primary source of tracking errors, so every CEM70 routes power and data through the mount body to ports near the saddle. The port set depends on the version you choose:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70, CEM70EC, CEM70EC2 and iGuider:\u003c\/strong\u003e 2x DC12V (3A) outputs, 3x USB 2.0 ports, 1x DC in \/ 1x DC out, iPort and a USB input, for your camera, guide camera and focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eW versions (WiFi \u0026amp; USB3):\u003c\/strong\u003e Built-in WiFi for wireless control plus a USB 3.0 connection, with 3x USB 3.0 ports, 1x DC12V (3A), 1x DC in \/ 2x DC out and iPort for fast camera downloads through the mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNUC versions:\u003c\/strong\u003e Dedicated DC 19V power, LAN and USB ports on the saddle to host an Intel NUC or similar mini PC right on the mount, plus DC12V (3A), DC (5A), guide and USB ports on the body, so the whole rig runs from one onboard computer with nothing dragging during a meridian flip.\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\u003eChoose Your CEM70 Version\u003c\/h3\u003e\n\u003cp\u003eAll ten versions share the 70 lb payload, 30 lb head, iPolar, GPS, Go2Nova 8410 controller, 9.5 kg counterweight and hard case. Pick a tracking family first (CEM70, CEM70EC or CEM70EC2), then the connectivity that suits your rig.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70 (standard):\u003c\/strong\u003e PPEC and \u0026lt; ±5 arcsec periodic error. The best value for imagers who already autoguide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70EC:\u003c\/strong\u003e Adds a high-resolution RA encoder with RPEC for \u0026lt; 0.3 arcsec RMS periodic error, making unguided multi-minute exposures practical at many focal lengths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM70EC2:\u003c\/strong\u003e High-resolution encoders on both RA and DEC with the same \u0026lt; 0.3 arcsec RMS rating, for imagers who want real-time encoder feedback on both axes of a long-focal-length or observatory rig.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eW versions (CEM70 w\/ WiFi \u0026amp; USB3, CEM70ECW, CEM70EC2W):\u003c\/strong\u003e Add built-in WiFi and upgrade the saddle hub to 3x USB 3.0 for cable-free mount control and fast data from high-resolution cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNUC-Ready versions (CEM70, CEM70EC and CEM70EC2):\u003c\/strong\u003e Add saddle-mounted DC 19V, LAN and USB ports to power and connect an Intel NUC mini PC (computer sold separately), and ship with a hard case shaped for the NUC version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiGuider version (CEM70 only):\u003c\/strong\u003e Adds iOptron's iGuider guiding system so you can autoguide without mounting a separate guide scope.\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\u003eiOptron CEM70 vs. Sky-Watcher EQ6-R Pro: Design and Integration\u003c\/h3\u003e\n\u003cp\u003eWhile the Sky-Watcher EQ6-R Pro is a benchmark for reliability in its payload class, the iOptron CEM70 represents a significant step up in both design philosophy and integrated features for the serious imager.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePayload-to-Weight Ratio:\u003c\/strong\u003e The EQ6-R Pro supports a respectable 44 lbs on a 38 lb head. The CEM70's center-balanced design carries 70 lbs on a 30 lb head, giving it a 2.33 ratio that is more than double the EQ6-R's, making it far more portable for its capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolar Alignment:\u003c\/strong\u003e Every CEM70 includes the iPolar electronic polar scope for fast, accurate alignment via a laptop screen. The EQ6-R relies on a traditional, through-the-axis optical polar scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Management:\u003c\/strong\u003e The CEM70's saddle-mounted USB hub (USB 2.0, or USB 3.0 on W versions) and 12V power outputs are a major advantage for managing imaging equipment. The EQ6-R lacks this integrated hub, requiring external cable routing that is prone to snagging.\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\"\u003eWhat is the difference between the CEM70 versions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAll versions share the same \u003cstrong\u003e70 lb (31.8 kg)\u003c\/strong\u003e payload, 30 lb head, iPolar, GPS, counterweight and hard case. The standard \u003cstrong\u003eCEM70\u003c\/strong\u003e uses PPEC for a periodic error below \u003cstrong\u003e±5 arcseconds\u003c\/strong\u003e. The \u003cstrong\u003eCEM70EC\u003c\/strong\u003e adds a high-resolution encoder on the RA axis with Real-time PEC for \u003cstrong\u003e\u0026lt; 0.3 arcsec RMS\u003c\/strong\u003e, and the \u003cstrong\u003eCEM70EC2\u003c\/strong\u003e adds encoders on both RA and DEC with the same rating. Within each family, \u003cstrong\u003eW\u003c\/strong\u003e versions add built-in WiFi and a USB 3.0 hub, \u003cstrong\u003eNUC\u003c\/strong\u003e versions add DC 19V, LAN and USB ports on the saddle for an onboard mini PC, and the standard CEM70 is also offered with the \u003cstrong\u003eiGuider\u003c\/strong\u003e guiding system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the iOptron CEM70's center-balanced design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is a superior payload-to-weight ratio of \u003cstrong\u003e2.33\u003c\/strong\u003e. By balancing the payload's center of gravity over the mount's core, every CEM70 can carry a \u003cstrong\u003e70 lb (31.8 kg)\u003c\/strong\u003e instrument package on a mount head that weighs only \u003cstrong\u003e30 lbs (13.6 kg)\u003c\/strong\u003e, making it more stable and portable than traditional German equatorial mounts of similar capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the CEM70 handle a Celestron EdgeHD 11\" for imaging the Whirlpool Galaxy (M51)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. An 11\" EdgeHD OTA weighs approximately \u003cstrong\u003e28 lbs (12.7 kg)\u003c\/strong\u003e, well under the CEM70's \u003cstrong\u003e70 lb\u003c\/strong\u003e payload capacity, leaving room for a camera, filter wheel and off-axis guider. The included \u003cstrong\u003e9.5 kg (20 lbs)\u003c\/strong\u003e counterweight may not balance a fully loaded 11\" setup on its own, so plan on an additional counterweight for payloads above roughly 20-25 lbs. With PPEC and autoguiding on the standard CEM70, or \u003cstrong\u003e\u0026lt; 0.3 arcsec RMS\u003c\/strong\u003e tracking on the EC and EC2, the mount holds the fine spiral arm detail of M51 at SCT focal lengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I still need to autoguide with the CEM70EC or CEM70EC2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor many focal lengths, no. The \u003cstrong\u003e\u0026lt; 0.3 arcsecond RMS\u003c\/strong\u003e periodic error of the encoder versions allows multi-minute unguided exposures with round stars. Autoguiding is still recommended for the longest exposures and highest-resolution work, because it corrects things encoders cannot, such as atmospheric refraction, polar misalignment drift and flexure in your optical tube. The standard CEM70, at \u003cstrong\u003e\u0026lt; ±5 arcsec\u003c\/strong\u003e with PPEC, is designed to be autoguided for long-exposure imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the integrated iPolar work if I can't see Polaris?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iPolar plate-solves the star field around the celestial pole, so it does not need Polaris itself to be visible and typically delivers a precise alignment in a few minutes from your computer screen. It does need a clear view of the sky near the pole; it cannot see through clouds, trees or buildings. If the pole is completely blocked, use an alternative method such as drift alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eShould I choose a W version or a NUC version of the CEM70?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose a \u003cstrong\u003eW version\u003c\/strong\u003e if you control the mount from a laptop or tablet: it adds built-in WiFi and a hub with \u003cstrong\u003e3x USB 3.0\u003c\/strong\u003e ports for fast camera downloads through the mount. Choose a \u003cstrong\u003eNUC version\u003c\/strong\u003e if you want an onboard computer: dedicated \u003cstrong\u003eDC 19V, LAN and USB\u003c\/strong\u003e ports on the saddle power and connect an Intel NUC or similar mini PC (sold separately) mounted directly on the CEM70, so no cables wrap or snag as the mount slews.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of power supply do I need to run the CEM70 in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need a stable \u003cstrong\u003eDC 12V power supply capable of delivering at least 5 Amps\u003c\/strong\u003e, with a 5.5mm\/2.5mm plug. The mount itself draws only about \u003cstrong\u003e0.6A\u003c\/strong\u003e when tracking and \u003cstrong\u003e0.8A\u003c\/strong\u003e when slewing, but the 5A rating covers motor start-up current and the accessories powered through the mount's cable management ports.\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 Type\u003c\/td\u003e\n\u003ctd\u003eCenter-balanced Equatorial Mount (CEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload\u003c\/td\u003e\n\u003ctd\u003e31.8 kg (70 lbs), excluding counterweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Weight\u003c\/td\u003e\n\u003ctd\u003e13.6 kg (30 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload to Mount Weight Ratio\u003c\/td\u003e\n\u003ctd\u003e2.33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; ±5 arcsec (CEM70); \u0026lt; 0.3 arcsec RMS by encoder (CEM70EC, CEM70EC2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePEC\u003c\/td\u003e\n\u003ctd\u003ePPEC, Permanent PEC (CEM70); Real-time PEC, RPEC (CEM70EC, CEM70EC2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-Resolution Encoders\u003c\/td\u003e\n\u003ctd\u003eNone (CEM70); RA axis (CEM70EC); RA and DEC axes (CEM70EC2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAll metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e0° ~ 65°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAzimuth Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e± 4°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight Ascension Worm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ151mm, 248 teeth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeclination Worm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ151mm, 248 teeth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm\u003c\/td\u003e\n\u003ctd\u003eΦ21.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Period\u003c\/td\u003e\n\u003ctd\u003e348 sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight Ascension Axle\u003c\/td\u003e\n\u003ctd\u003eΦ55mm, steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeclination Axle\u003c\/td\u003e\n\u003ctd\u003eΦ55mm, steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight Ascension Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeclination Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Drive\u003c\/td\u003e\n\u003ctd\u003ePrecision stepper motor w\/128 micro-steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGoTo Resolution\u003c\/td\u003e\n\u003ctd\u003e0.07 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Speed\u003c\/td\u003e\n\u003ctd\u003e3.75°\/sec (900x) max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHand Controller\u003c\/td\u003e\n\u003ctd\u003eGo2Nova® 8410, 8 line 21 character LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolar Scope\u003c\/td\u003e\n\u003ctd\u003eInternal electronic polar scope, iPolar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPS\u003c\/td\u003e\n\u003ctd\u003eYes, 32-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Saddle\u003c\/td\u003e\n\u003ctd\u003e8\" Losmandy D \u0026amp; Vixen Dual Saddle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eDC 12V, 5A (5.5mm\/2.5mm plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.6A (Tracking), 0.8A (GOTO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuiding Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Port\u003c\/td\u003e\n\u003ctd\u003eUSB 2.0; USB 3.0 and built-in WiFi (W versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003e2x DC12V (3A), 3x USB 2.0, 1x DC in\/1x DC out, iPort, 1x USB input (CEM70, CEM70EC, CEM70EC2, iGuider); 1x DC12V (3A), 3x USB 3.0, 1x DC in\/2x DC out, iPort (W versions); body DC12V (3A), DC (5A), guide, USB + saddle DC 19V, LAN, USB (NUC versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeridian Treatment\u003c\/td\u003e\n\u003ctd\u003eStop (0-10° pass), auto flip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero Position\u003c\/td\u003e\n\u003ctd\u003eAutomatic zero search\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ28 x 415 mm, stainless steel (1.9kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Included\u003c\/td\u003e\n\u003ctd\u003e9.5 kg (20 lbs) x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Base Size\u003c\/td\u003e\n\u003ctd\u003eΦ152mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHard Case\u003c\/td\u003e\n\u003ctd\u003eYes, all versions (NUC versions use a case shaped for the NUC mount head)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLevel Indicator\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C ~ +40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod\/Pier\u003c\/td\u003e\n\u003ctd\u003eNot included; LiteRoc tripod (8023ACC) or pier optional\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\"\u003eCEM70 Mount Head (CEM70, CEM70EC or CEM70EC2, per version)\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\"\u003eIntegrated iPolar Electronic Polar Scope\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\"\u003eiGuider Guiding System\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (iGuider version)\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\"\u003eGo2Nova 8410 Hand Controller\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\"\u003e9.5 kg (20 lbs) Counterweight\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\"\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\"\u003eHard Carrying Case\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\"\u003eAC Power Adapter \u0026amp; DC Cables\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_CEM70_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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.ioptron.com\/category-s\/133.htm\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\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":"CEM70 w\/ iPolar","offer_id":44967924891933,"sku":"IOP-C70A","price":4969.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70 w\/ iPolar, WiFi \u0026 USB3","offer_id":44967925055773,"sku":"IOP-C70AW","price":5529.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70 NUC-Ready w\/ iPolar","offer_id":44967924957469,"sku":"IOP-C70AN","price":4701.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70 w\/ iPolar \u0026 iGuider","offer_id":44967924924701,"sku":"IOP-C70AG","price":5177.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70EC w\/ iPolar","offer_id":44967924990237,"sku":"IOP-C704A0","price":7461.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70EC w\/ iPolar, WiFi \u0026 USB3","offer_id":52917262352669,"sku":"IOP-C704AW0","price":7937.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70EC NUC-Ready w\/ iPolar","offer_id":44967925023005,"sku":"IOP-C704AN0","price":6941.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70EC2 w\/ iPolar","offer_id":44967925088541,"sku":"IOP-C706A0","price":8635.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70EC2 w\/ iPolar, WiFi \u0026 USB3","offer_id":52917262385437,"sku":"IOP-C706AW0","price":9995.0,"currency_code":"CAD","in_stock":true},{"title":"CEM70EC2 NUC-Ready w\/ iPolar","offer_id":52917262418205,"sku":"IOP-C706AN0","price":9659.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-CEM70__60812.1636769799.1280.1280.jpg?v=1684347083"},{"product_id":"ioptron-cem40-mount","title":"iOptron CEM40 Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e40 lb (18 kg) payload on a 17.4 lb (7.9 kg) mount head, 2.28 payload-to-weight ratio\u003c\/li\u003e\n\u003cli\u003eIntegrated iPolar electronic polar scope and built-in 32-channel GPS\u003c\/li\u003e\n\u003cli\u003e\u0026lt; ±7.5 arcsec periodic error with PPEC (CEM40); \u0026lt; 0.3 arcsec RMS with RA encoder (CEM40EC)\u003c\/li\u003e\n\u003cli\u003eGo2Nova GoTo controller with 212,000+ object database\u003c\/li\u003e\n\u003cli\u003e6\" Losmandy D \u0026amp; Vixen dual saddle with DC12V, ST-4 and USB cable management\u003c\/li\u003e\n\u003cli\u003ePackages with LiteRoc or 1.5\" tripod, or Head Only (no tripod, no counterweight)\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 CEM40 Mount\u003c\/h2\u003e\n\u003cp\u003eThe iOptron CEM40 redefines portability by supporting a 40 lb (18 kg) payload on a mount head that weighs only 17.4 lb (7.9 kg), an impressive 2.28 payload-to-weight ratio. Its drive is built around Φ110mm, 216-tooth zero-backlash worm wheels, and every version includes the integrated iPolar electronic polar scope, built-in GPS and a Go2Nova controller with over 212,000 objects. The CEM40 is offered in several versions: the standard CEM40 with \u0026lt; ±7.5 arcsec periodic error or the encoder-equipped CEM40EC at \u0026lt; 0.3 arcsec RMS, with or without a hard case, with the iGuider or NUC integration, and packaged with a 1.75\" LiteRoc tripod, a 1.5\" tripod, or as a head-only kit for pier and existing-tripod owners.\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 2.28 Payload-to-Weight Ratio: 40 lb Capacity from a 17.4 lb Head\u003c\/h3\u003e\n\u003cp\u003eThe core of the CEM40's design is its Center-Balanced Equatorial Mount architecture, which places the payload's center of gravity directly over the tripod's or pier's central axis. This increases stability and allows the mount to handle a 40 lb instrument load with a head weighing just 17.4 lbs, a ratio traditional German equatorial mounts struggle to match. The entire structure is CNC machined from metal and finished in anodized red\/black, giving you a rigid, durable platform you can carry to a dark sky site without the burden of an excessively heavy mount.\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 Drive: 216-Tooth Worm Wheels, PPEC or \u0026lt; 0.3 Arcsec RMS Encoder\u003c\/h3\u003e\n\u003cp\u003eBoth axes use large Φ110mm worm wheels with 216 teeth, driven by Φ17mm brass worms through a synchronous belt transmission. The spring-loaded, zero-backlash worm system maintains constant gear pressure for responsive guiding corrections, while 1.8° stepper motors with 128x micro-stepping achieve a fine 0.08 arcsecond resolution.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM40:\u003c\/strong\u003e A native periodic error of less than ±7.5 arcseconds, further improved with built-in Permanent Periodic Error Correction (PPEC), gives an autoguider very little work to do.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM40EC:\u003c\/strong\u003e A high-resolution encoder on the Right Ascension axis drives Real-time PEC (RPEC), correcting worm gear error as it happens for a periodic error of less than 0.3 arcseconds RMS, precise enough for multi-minute unguided exposures with many short-to-medium focal length refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Shafts:\u003c\/strong\u003e Both RA and DEC axes are built on Φ45mm steel shafts supported by Φ68mm bearings for maximum stability under load.\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\u003eGo2Nova Controller: 212,000+ Objects, GPS and 4.5°\/sec Slewing\u003c\/h3\u003e\n\u003cp\u003eThe Go2Nova hand controller's 8-line, 21-character LCD is your command center for a database of more than 212,000 objects, and the built-in 32-channel GPS automatically enters your location, date and time for a faster, more accurate setup. Once aligned, the CEM40 slews between targets at up to 4.5° per second.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Cable Management:\u003c\/strong\u003e Pass-through DC12V (3A), ST-4 and USB ports near the saddle keep camera and guide camera cables from snagging as the mount slews.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Saddle:\u003c\/strong\u003e The 6\" dovetail saddle accepts both Losmandy D-style and Vixen V-style plates without adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Zero Search and Power-Down Memory:\u003c\/strong\u003e The mount finds its own zero position and remembers its state, giving you a reliable starting point every night.\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\u003eiPolar Alignment: Accurate Setup from 0° to 60° Latitude\u003c\/h3\u003e\n\u003cp\u003eEvery CEM40 eliminates the most tedious part of setup with its integrated iPolar electronic polar scope. Its sensitive camera and software plate-solve the star field around the celestial pole, so you achieve a precise polar alignment in minutes on your computer screen, without kneeling behind the mount and even when Polaris is obscured. The mount's wide 0° to 60° latitude adjustment range makes it a viable option for observers from the equator to high northern or southern latitudes.\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\u003eChoose Your CEM40 Version\u003c\/h3\u003e\n\u003cp\u003eAll versions share the same 40 lb payload, 17.4 lb head, integrated iPolar, GPS, Go2Nova controller and AC adapter. Choose the tracking model first, then the package that fits how you will support and transport the mount.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM40 (standard):\u003c\/strong\u003e \u0026lt; ±7.5 arcsec periodic error with PPEC. Ideal for imagers who autoguide through the ST-4 port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM40EC:\u003c\/strong\u003e Adds a high-resolution RA encoder with RPEC for \u0026lt; 0.3 arcsec RMS periodic error, making unguided imaging with short-to-medium focal lengths practical and giving long focal length systems a steadier guiding platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiteRoc versions:\u003c\/strong\u003e Include the 1.75\" stainless steel LiteRoc tripod (7 kg) and a 5 kg (11 lbs) counterweight, ready to set up and image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5\" Tripod versions:\u003c\/strong\u003e Include a 1.5\" tripod in place of the LiteRoc, plus a 5 kg (11 lbs) counterweight, as a complete ready-to-use package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase versions:\u003c\/strong\u003e Add a custom-fitted hard carrying case for transport and storage. CEM40 w\/ iPolar \u0026amp; LiteRoc and CEM40 w\/ iPolar \u0026amp; 1.5\" Tripod do not include a case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiGuider version:\u003c\/strong\u003e Adds iOptron's iGuider guiding system to the CEM40 for autoguiding without a separate guide scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNUC versions:\u003c\/strong\u003e Add provisions for mounting an Intel NUC mini PC on the mount (computer sold separately) for a compact, computer-controlled imaging rig with fewer loose cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Only versions (CEM40 and CEM40EC):\u003c\/strong\u003e Mount head with iPolar, hand controller, AC adapter and hard case, with no tripod and no counterweight. The right choice if you already own a tripod or will install the mount on a pier.\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\u003eCEM40 vs. GEM45: Choosing Your iOptron Mount\u003c\/h3\u003e\n\u003cp\u003eThe CEM40 and its sibling, the GEM45, are two of the most capable mounts in their payload class. The choice between them often comes down to design preference and specific use cases.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiOptron CEM40:\u003c\/strong\u003e With its 40 lb payload and 17.4 lb head weight, the CEM40's primary advantage is portability and ergonomics. The center-balanced form factor is inherently stable and easier to carry and set up, especially for observers at lower latitudes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiOptron GEM45:\u003c\/strong\u003e The GEM45 uses a traditional German Equatorial Mount design with a slightly higher 45 lb payload capacity. It can be a better fit for permanently mounted setups or for users accustomed to the workflow of a conventional GEM.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor most portable imagers, the CEM40's center-balanced design, lighter weight and excellent stability are a decisive advantage in the field.\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 difference between the CEM40 versions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEvery version uses the same \u003cstrong\u003e40 lb (18 kg)\u003c\/strong\u003e payload mount head with integrated iPolar and GPS. The standard \u003cstrong\u003eCEM40\u003c\/strong\u003e tracks to \u003cstrong\u003e\u0026lt; ±7.5 arcsec\u003c\/strong\u003e with PPEC, while the \u003cstrong\u003eCEM40EC\u003c\/strong\u003e adds a high-resolution RA encoder for \u003cstrong\u003e\u0026lt; 0.3 arcsec RMS\u003c\/strong\u003e. The rest of the label tells you what is packaged with it: \u003cstrong\u003eLiteRoc\u003c\/strong\u003e (1.75\" tripod) or \u003cstrong\u003e1.5\" Tripod\u003c\/strong\u003e versions include a tripod and a 5 kg counterweight, \u003cstrong\u003eCase\u003c\/strong\u003e versions add a hard carrying case, \u003cstrong\u003eiGuider\u003c\/strong\u003e and \u003cstrong\u003eNUC\u003c\/strong\u003e versions add guiding or mini-PC integration, and \u003cstrong\u003eHead Only\u003c\/strong\u003e versions include the mount head, iPolar, controller and hard case but \u003cstrong\u003eno tripod and no counterweight\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to buy separately with a CEM40 Head Only version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Head Only packages include the mount head, integrated iPolar, Go2Nova hand controller, AC adapter and hard case. To image you will need \u003cstrong\u003ea tripod or pier\u003c\/strong\u003e (such as the iOptron LiteRoc tripod) and \u003cstrong\u003eat least one counterweight\u003c\/strong\u003e sized to your payload; the CEM40 uses the #8027 counterweight on its Φ28mm counterweight shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the iOptron CEM40's center-balanced design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe center-balanced design places the telescope's weight directly over the center of the pier or tripod. This increases stability and gives the CEM40 a high payload-to-weight ratio of \u003cstrong\u003e2.28\u003c\/strong\u003e, carrying a \u003cstrong\u003e40 lb\u003c\/strong\u003e payload on a mount head that weighs only \u003cstrong\u003e17.4 lb\u003c\/strong\u003e, so it is far easier to transport and set up than a traditional GEM of similar capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the iOptron CEM40 handle an 8\" SCT for imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. An 8\" SCT optical tube typically weighs \u003cstrong\u003e12-15 lbs\u003c\/strong\u003e, and with a camera, guide scope and accessories the total is usually around \u003cstrong\u003e20-25 lbs\u003c\/strong\u003e, well within the CEM40's \u003cstrong\u003e40 lb\u003c\/strong\u003e capacity. The standard CEM40's \u003cstrong\u003e\u0026lt; ±7.5 arcsec\u003c\/strong\u003e tracking with autoguiding, or the CEM40EC's \u003cstrong\u003e\u0026lt; 0.3 arcsec RMS\u003c\/strong\u003e encoder tracking, is more than sufficient for detailed images of M42.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs autoguiding necessary for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the standard \u003cstrong\u003eCEM40\u003c\/strong\u003e, plan to autoguide: a guide camera on a separate guide scope (or the iGuider version) connects to the \u003cstrong\u003eST-4 port\u003c\/strong\u003e, and guiding software on a laptop connected via USB keeps stars pinpoint. With the \u003cstrong\u003eCEM40EC\u003c\/strong\u003e, many wide-field setups (typically \u003cstrong\u003eunder 600mm\u003c\/strong\u003e focal length) produce round stars in multi-minute unguided exposures thanks to its \u003cstrong\u003e\u0026lt; 0.3 arcsec RMS\u003c\/strong\u003e tracking; guiding still helps with longer focal lengths or exposures beyond 5-10 minutes by correcting atmospheric refraction and drift.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the iPolar on the CEM40 simplify polar alignment?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe integrated \u003cstrong\u003eiPolar\u003c\/strong\u003e is an electronic polar scope built into every CEM40. Its sensitive camera and software plate-solve the star field around the celestial pole and show you on your computer screen how to adjust altitude and azimuth, so you reach a highly accurate alignment in just a few minutes without kneeling behind the mount, even if you cannot see Polaris.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the iOptron CEM40 have built-in WiFi?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the CEM40 does not have built-in WiFi. WiFi connectivity is available as an \u003cstrong\u003eexternal, optional\u003c\/strong\u003e accessory for wireless control from a smartphone, tablet or computer. Out of the box, the mount connects to a computer through its \u003cstrong\u003eUSB\u003c\/strong\u003e port.\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 Type\u003c\/td\u003e\n\u003ctd\u003eCenter-Balanced Equatorial Mount (CEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Payload\u003c\/td\u003e\n\u003ctd\u003e40 lb (18 kg), excluding counterweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Weight\u003c\/td\u003e\n\u003ctd\u003e17.4 lb (7.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload-to-Mount Weight Ratio\u003c\/td\u003e\n\u003ctd\u003e2.28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructure Material\u003c\/td\u003e\n\u003ctd\u003eAll metal, CNC machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExterior Finish\u003c\/td\u003e\n\u003ctd\u003eAnodized red\/black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e0º ~ 60º (special CW shaft mounting if \u0026lt;10°)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAzimuth Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e± 6º\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTracking Accuracy (PE)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; ±7.5 arcsec (CEM40); \u0026lt; 0.3 arcsec RMS with high-resolution encoder (CEM40EC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error Correction\u003c\/td\u003e\n\u003ctd\u003ePPEC, Permanent PEC (CEM40); Real-time PEC, RPEC (CEM40EC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-Resolution Encoder\u003c\/td\u003e\n\u003ctd\u003eNone (CEM40); RA axis (CEM40EC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Period\u003c\/td\u003e\n\u003ctd\u003e400 sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Diameter\u003c\/td\u003e\n\u003ctd\u003eΦ17mm, Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight Ascension Worm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ110mm, 216 teeth, zero backlash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeclination Worm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ110mm, 216 teeth, zero backlash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight Ascension Axis Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ45mm steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeclination Axis Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ45mm steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight Ascension Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ68mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeclination Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ68mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Motor\u003c\/td\u003e\n\u003ctd\u003ePrecision stepper motor, 1.8º\/128X micro-step\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Resolution\u003c\/td\u003e\n\u003ctd\u003e0.08 arcsec (200 PPS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission\u003c\/td\u003e\n\u003ctd\u003eSynchronous belt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHand Controller\u003c\/td\u003e\n\u003ctd\u003eGo2Nova® HC, 8 line 21 character LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStar Database\u003c\/td\u003e\n\u003ctd\u003e212,000+ objects, with star identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Slew Speed\u003c\/td\u003e\n\u003ctd\u003e4.5°\/sec (1080x)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eDC 12V, 5A (5.5mm\/2.5mm plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Adapter\u003c\/td\u003e\n\u003ctd\u003e100V ~ 240V (included, for indoor use only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.6A (Tracking), 0.9A (GoTo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower-down Memory\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolar Scope\u003c\/td\u003e\n\u003ctd\u003eInternal iPolar™ electronic polar scope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPS\u003c\/td\u003e\n\u003ctd\u003eYes, built-in 32-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeridian Treatment\u003c\/td\u003e\n\u003ctd\u003eStop (0-10° pass), flip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero Position\u003c\/td\u003e\n\u003ctd\u003eAutomatic zero search\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Saddle\u003c\/td\u003e\n\u003ctd\u003e6\" Losmandy D \u0026amp; Vixen dual saddle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuiding Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Port\u003c\/td\u003e\n\u003ctd\u003eUSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi\u003c\/td\u003e\n\u003ctd\u003eExternal (optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003eDC12V (3A), ST4, USB ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ28 x 280 mm Stainless Steel, 1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Included\u003c\/td\u003e\n\u003ctd\u003eOne 5 kg (11 lbs) with LiteRoc and 1.5\" Tripod versions; not included with Head Only versions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod\u003c\/td\u003e\n\u003ctd\u003eLiteRoc 1.75\" Stainless Steel (7kg) on LiteRoc versions; 1.5\" tripod on 1.5\" Tripod versions; not included with Head Only versions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHard Case\u003c\/td\u003e\n\u003ctd\u003eIncluded with Case versions (including both Head Only versions); not included with CEM40 w\/ iPolar \u0026amp; LiteRoc or CEM40 w\/ iPolar \u0026amp; 1.5\" Tripod\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10ºC ~ 40ºC\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\"\u003eCEM40 or CEM40EC Mount Head (per version)\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\"\u003eiPolar Electronic Polar Scope (Integrated)\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\"\u003eGo2Nova Hand Controller\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\"\u003eAC Power Adapter (100-240V)\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\"\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\"\u003e5 kg (11 lbs) Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (LiteRoc and 1.5\" Tripod versions)\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\"\u003eLiteRoc 1.75\" Stainless Steel Tripod\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (LiteRoc versions)\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\"\u003e1.5\" Tripod\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (1.5\" Tripod versions)\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\"\u003eHard Carrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (Case versions, incl. Head Only)\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\"\u003eiGuider Guiding System\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (iGuider version)\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_7400_CEM40_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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.ioptron.com\/category-s\/133.htm\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\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":"CEM40 w\/ iPolar \u0026 LiteRoc","offer_id":44967925285149,"sku":"IOP-C401A3","price":3919.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40 w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967925317917,"sku":"IOP-C402A3","price":4045.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40 w\/ iPolar \u0026 1.5\" Tripod","offer_id":44967925481757,"sku":"IOP-C401A1","price":3765.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40 w\/ iPolar, Case \u0026 1.5\" Tripod","offer_id":44967925514525,"sku":"IOP-C402A1","price":3891.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40 w\/ iPolar, iGuider, Case \u0026 LiteRoc","offer_id":44967925350685,"sku":"IOP-C402AG3","price":4213.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40 NUC-Ready w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967925383453,"sku":"IOP-C402AN3","price":4045.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40 Head Only w\/ iPolar \u0026 Case","offer_id":52917263106333,"sku":"IOP-C402A","price":3625.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40EC w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967925416221,"sku":"IOP-C404A3","price":6159.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40EC w\/ iPolar, Case \u0026 1.5\" Tripod","offer_id":44967925547293,"sku":"IOP-C404A1","price":6005.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40EC NUC-Ready w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967925448989,"sku":"IOP-C404AN3","price":6159.0,"currency_code":"CAD","in_stock":true},{"title":"CEM40EC Head Only w\/ iPolar \u0026 Case","offer_id":52917263139101,"sku":"IOP-C404A","price":5739.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-CEM40__82557.1636829546.1280.1280.jpg?v=1684347085"},{"product_id":"ioptron-cem26-mount","title":"iOptron CEM26 Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e26 lbs (12 kg) payload capacity\u003c\/li\u003e\n\u003cli\u003e10 lbs (4.5 kg) mount head weight\u003c\/li\u003e\n\u003cli\u003eCenter-Balanced Equatorial Mount (CEM) design\u003c\/li\u003e\n\u003cli\u003eGo2Nova controller with ~212,000 objects\u003c\/li\u003e\n\u003cli\u003eBuilt-in Wi-Fi and USB port for computer control\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 CEM26 Mount\u003c\/h2\u003e\n\u003cp\u003eThe iOptron CEM26 Mount redefines portable astrophotography by pairing a 26 lbs (12 kg) payload capacity with a mount head that weighs just 10 lbs (4.5 kg). This class-leading payload-to-weight ratio of 2.60 is achieved through iOptron's innovative Center-Balanced Equatorial Mount (CEM) design, which maximizes stability and tracking accuracy. Driven by 144-tooth worm wheels, the mount delivers a periodic error of less than ±12 arcseconds, while the Go2Nova controller puts a database of ~212,000 celestial objects at your fingertips via the hand controller or its built-in Wi-Fi.\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\u003eCEM Design: A 2.6 Payload-to-Weight Ratio for Ultimate Portability\u003c\/h3\u003e\n\u003cp\u003eThe core of the CEM26's design is its remarkable efficiency. By positioning the payload's center of gravity directly over the tripod, the CEM architecture delivers the stability of a much heavier mount without the physical burden. The mount head itself weighs only 10 lbs (4.5kg) yet confidently carries imaging rigs up to 26 lbs (12kg), resulting in an industry-leading payload-to-weight ratio of 2.60. This makes the CEM26 an ideal choice for astronomers who need a capable imaging platform that is easy to transport and set up at a dark sky site.\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 Drive System: 144-Tooth Worm Wheels and \u0026lt;±12 Arcsecond PE\u003c\/h3\u003e\n\u003cp\u003eAccurate tracking is critical for astrophotography, and the CEM26 is engineered for precision. Both the right ascension and declination axes feature large Φ88mm, 144-tooth aluminum worm wheels driven by a 1.8º stepper motor with 128x micro-stepping. This combination yields a high resolution of 0.17 arcseconds for smooth tracking and precise guiding. The mount has a native periodic error of less than ±12 arcseconds, and its built-in Permanent Periodic Error Correction (PPEC) allows you to train the mount to reduce this error even further for unguided or long-exposure guided imaging.\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\u003eGo2Nova Controller: A 212,000-Object Database with WiFi Control\u003c\/h3\u003e\n\u003cp\u003eLocating and tracking celestial targets is managed by the powerful Go2Nova® 8409 hand controller, which contains a database of approximately 212,000 objects. For modern, flexible control, the CEM26 features built-in Wi-Fi, allowing you to connect and operate the mount wirelessly from a smartphone, tablet, or computer. It also includes a direct USB port for a reliable wired connection to a PC for control via ASCOM drivers, an ST-4 compatible autoguide port for deep-sky imaging, and supports firmware upgrades to keep the system current.\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\u003eField-Ready Ergonomics: 0º to 60º Latitude Range and Quick Polar Alignment\u003c\/h3\u003e\n\u003cp\u003eDesigned for practical use in the field, the CEM26 incorporates several features for a fast and painless setup. Its exceptionally wide latitude adjustment range of 0º to 60º ensures it can be polar aligned almost anywhere on Earth. Depending on the package, polar alignment is accomplished with either the AccuAlign™ optical polar scope or the highly-acclaimed iPolar™ electronic polar scope, which provides a fast, precise alignment through a simple software interface. Large, positive-locking gear clutches and a center-adjustable 3.8\" Vixen-style dovetail saddle make balancing your telescope quick and secure.\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\u003eiOptron CEM26 vs. Sky-Watcher HEQ5 Pro: A Modern Take on Portability\u003c\/h3\u003e\n\u003cp\u003eFor years, the Sky-Watcher HEQ5 Pro has been a benchmark for mid-range equatorial mounts. While the HEQ5 is known for its robust, traditional German Equatorial design, the iOptron CEM26 offers a distinctly modern alternative focused on portability and integrated technology.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight and Portability:\u003c\/strong\u003e This is the CEM26's defining advantage. Its 10 lb head weight is less than half that of the HEQ5 Pro's ~22 lb head, making the iOptron far easier to transport and set up without sacrificing capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign and Efficiency:\u003c\/strong\u003e The CEM26's Center-Balanced design provides excellent stability for its weight. While the HEQ5 has a slightly higher payload capacity at ~30 lbs, the CEM26's 26 lb rating is achieved on a much lighter and more compact frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Features:\u003c\/strong\u003e The CEM26 comes standard with built-in Wi-Fi for wireless control. The HEQ5 Pro requires an external Wi-Fi dongle for similar functionality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatitude Range:\u003c\/strong\u003e The CEM26's 0º to 60º range offers greater flexibility for observers at very low or high latitudes compared to the HEQ5's more conventional range.\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\"\u003eWhat is the main advantage of the iOptron CEM26's Center-Balanced design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantage is its high efficiency, delivering a \u003cstrong\u003e26 lb payload capacity\u003c\/strong\u003e on a mount head that weighs only \u003cstrong\u003e10 lbs\u003c\/strong\u003e. By centering the telescope's weight directly over the tripod, the CEM design increases stability, allowing for a lighter, more portable mount without compromising the performance needed for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the iOptron CEM26 mount with my smartphone or tablet?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The iOptron CEM26 has \u003cstrong\u003ebuilt-in Wi-Fi\u003c\/strong\u003e, allowing you to connect to the mount wirelessly. Using iOptron's Commander app or other compatible astronomy software like SkySafari, you can control the mount's GoTo functions, slewing, and tracking directly from your smart device.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the iOptron CEM26 handle an 80mm refractor for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe CEM26 is an excellent platform for this setup. A typical 80mm refractor imaging rig (including camera, guidescope, and accessories) weighs between 10-15 lbs, well within the mount's \u003cstrong\u003e26 lb capacity\u003c\/strong\u003e. The mount's low periodic error of \u003cstrong\u003e\u0026lt;±12 arcseconds\u003c\/strong\u003e and ST-4 autoguide port will ensure the sharp, round stars needed to capture the faint dust lanes of the Andromeda Galaxy (M31).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the iOptron CEM26 suitable for planetary imaging with a 6\" SCT on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. A 6\" SCT is lightweight and well-supported by the CEM26. For planetary imaging, precise tracking at high magnification is key. The mount's high-resolution \u003cstrong\u003e0.17 arcsecond\u003c\/strong\u003e motor drive allows for very fine tracking adjustments, which is critical for keeping planets like Jupiter centered on a small sensor during high-frame-rate video capture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the AccuAlign and iPolar options for the CEM26?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron CEM26 is available with two different polar alignment tools.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuAlign™:\u003c\/strong\u003e This is a traditional, dark-field illuminated optical polar scope that you look through to align the mount's axis with Polaris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiPolar™:\u003c\/strong\u003e This is an integrated electronic polar scope (a small camera) that connects to a computer. It provides a simple, highly accurate digital interface for polar alignment, even when Polaris is obscured.\u003c\/li\u003e\n\u003c\/ul\u003e\nThe iPolar is generally considered faster and more precise, especially for imagers.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a computer to use the iOptron CEM26's GoTo system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The included \u003cstrong\u003eGo2Nova® 8409 hand controller\u003c\/strong\u003e is a fully functional, standalone computer with a database of \u003cstrong\u003e~212,000 objects\u003c\/strong\u003e. You can perform alignment, find objects, and control all mount functions using only the hand controller. A computer or smart device is optional for advanced control via the USB port or built-in Wi-Fi.\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 Type\u003c\/td\u003e\n\u003ctd\u003eCenter-Balanced Equatorial Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e26 lbs (12kg), excludes counterweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Weight\u003c\/td\u003e\n\u003ctd\u003e10 lbs (4.5kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload to Mount Weight Ratio\u003c\/td\u003e\n\u003ctd\u003e2.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error (PE)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;±12 arcsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePermanent PEC\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Period\u003c\/td\u003e\n\u003ctd\u003e600 sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Wheels\u003c\/td\u003e\n\u003ctd\u003eΦ88mm, 144 teeth aluminum (RA \u0026amp; Dec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxis Shafts\u003c\/td\u003e\n\u003ctd\u003eΦ35mm steel (RA \u0026amp; Dec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearings\u003c\/td\u003e\n\u003ctd\u003eΦ55mm ball bearing (RA \u0026amp; Dec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Gears\u003c\/td\u003e\n\u003ctd\u003eΦ15.2mm, Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Drive\u003c\/td\u003e\n\u003ctd\u003e1.8º stepper motor, 128X microdivision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Resolution\u003c\/td\u003e\n\u003ctd\u003e0.17 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission\u003c\/td\u003e\n\u003ctd\u003eSynchronous belt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHand Controller\u003c\/td\u003e\n\u003ctd\u003eGo2Nova® 8409\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObject Database\u003c\/td\u003e\n\u003ctd\u003e~212,000 objects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Speeds\u003c\/td\u003e\n\u003ctd\u003e1×, 2×, 8×, 16×, 64×, 128×, 256×, 512×, MAX (6º\/sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e0º ~ 60º\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAzimuth Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e± 6º\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eBuilt-in Wi-Fi and USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoguide Port\u003c\/td\u003e\n\u003ctd\u003eYes (ST-4 compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePC Control\u003c\/td\u003e\n\u003ctd\u003eYes (ASCOM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolar Scope\u003c\/td\u003e\n\u003ctd\u003eAccuAlign TM optical polar scope (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPS\u003c\/td\u003e\n\u003ctd\u003eOptional external 32-channel GPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Saddle\u003c\/td\u003e\n\u003ctd\u003e3.8\" Vixen-style, center adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ20 x 200mm with 120mm extension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Counterweight\u003c\/td\u003e\n\u003ctd\u003e10 lbs (4.5kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod Option\u003c\/td\u003e\n\u003ctd\u003eLiteRoc stainless steel tripod (7.5kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e12V DC, 5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5A (Tracking), 0.8A (GoTo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation Temperature\u003c\/td\u003e\n\u003ctd\u003e-10ºC ~ 40ºC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructure Material\u003c\/td\u003e\n\u003ctd\u003eAll metal, Casting + CNC machined\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\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_CEM26_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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.ioptron.com\/category-s\/133.htm\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\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":"CEM26 w\/ AccuAlign, Case \u0026 LiteRoc","offer_id":44967925940509,"sku":"IOP-C262B3","price":2379.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ iPolar \u0026 1.5\" Tripod","offer_id":44967925711133,"sku":"IOP-C261A1","price":1957.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ AccuAlign \u0026 1.5\" Tripod","offer_id":44967925743901,"sku":"IOP-C261B1","price":1817.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ AccuAlign \u0026 LiteRoc","offer_id":44967925776669,"sku":"IOP-C261B3","price":2225.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ iPolar, Case \u0026 1.5\" Tripod","offer_id":44967925809437,"sku":"IOP-C262A1","price":2027.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967925842205,"sku":"IOP-C262A3","price":2519.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ AccuAlign, Case \u0026 1.5\" Tripod","offer_id":44967925874973,"sku":"IOP-C262B1","price":1957.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26 w\/ iPolar \u0026 LiteRoc","offer_id":44967925907741,"sku":"IOP-C261A3","price":2379.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26EC w\/ iPolar, Case \u0026 1.5\" Tripod","offer_id":44967925973277,"sku":"IOP-C264A1","price":3833.0,"currency_code":"CAD","in_stock":true},{"title":"CEM26EC w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926006045,"sku":"IOP-C264A3","price":4437.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-CEM26__11447.1636831250.1280.1280.jpg?v=1684347086"},{"product_id":"ioptron-8036-120","title":"iOptron CEM120 Pier Top Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEM120 Mount Compatibility:\u003c\/strong\u003e Designed specifically to adapt the iOptron CEM120 mount head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Pier Options:\u003c\/strong\u003e Enables mounting on an iOptron Tri-Pier or a custom-engineered observatory pier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Precision-machined and anodized for robust, long-term use in the field or observatory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e 8036-120\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 CEM120 Pier Top Adapter\u003c\/h2\u003e\n\u003cp\u003eThe iOptron CEM120 Pier Top Adapter (model 8036-120) provides the essential mechanical interface for installing your CEM120 mount head on a non-standard foundation. This precision-machined, anodized adapter allows you to integrate your observatory-grade CEM120 mount with either a portable iOptron Tri-Pier or a custom-built pier for a permanent installation.\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 8036-120 Adapter for Custom Pier Integration\u003c\/h3\u003e\n\u003cp\u003eFor astronomers building a permanent observatory, the 8036-120 adapter is the critical link between your custom pier and the CEM120 mount. It delivers the correct mounting interface, ensuring a secure, stable fit for your equipment. When engineering your own pier, ensure it is anchored to exceed the CEM120's requirements for payload capacity, torsional stiffness, and thermal stability to create an unwavering imaging platform.\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\u003eTri-Pier Mounting: A Critical Note on Payload Limits\u003c\/h3\u003e\n\u003cp\u003eWhile this adapter allows the CEM120 head to be mechanically fitted to an iOptron Tri-Pier, this configuration requires careful consideration as a trade-off. The Tri-Pier's payload capacity may be insufficient for a fully-loaded CEM120 imaging setup. This combination is not recommended for heavy payloads; use it with caution and at your own risk to avoid instability or damage to your equipment.\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 iOptron CEM120 Pier Top Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron CEM120 Pier Top Adapter (model 8036-120) is designed to allow you to mount an iOptron CEM120 mount head onto a support structure other than the standard observatory pier, such as an \u003cstrong\u003eiOptron Tri-Pier\u003c\/strong\u003e or a \u003cstrong\u003ecustom-built pier\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI am building a concrete pier for my observatory. Is the iOptron 8036-120 adapter what I need for my CEM120?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the correct adapter to create the mechanical interface between the top of your custom pier and the base of the CEM120 mount. You will need to ensure your pier's top plate is drilled to accept this adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the iOptron CEM120 adapter to put my fully-loaded imaging rig on an iOptron Tri-Pier?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is not recommended. While the adapter provides a mechanical fit, the \u003cstrong\u003eTri-Pier's payload capacity may be insufficient\u003c\/strong\u003e for a CEM120 carrying a heavy telescope and imaging train. This combination should only be used with light payloads and with extreme caution to prevent instability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat should I consider when designing a custom pier for the iOptron CEM120 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYour custom pier must be engineered to exceed the mount's operational requirements. Key factors to consider are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePayload Capacity:\u003c\/strong\u003e The pier must support the total weight of the mount, telescope, and all accessories without flexure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorsional Stiffness:\u003c\/strong\u003e It must resist twisting forces to maintain pointing accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e The pier should not expand or contract significantly with temperature changes, which can affect focus and alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI need a more portable setup for my CEM120 for outreach events. Is using the 8036-120 adapter with a Tri-Pier a good solution?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis can be a viable solution for portability, but only with a lightweight and well-balanced payload. You must be mindful of the Tri-Pier's capacity limitations. For a heavy setup, this combination is not a safe or stable option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow durable is the iOptron CEM120 Pier Top Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter is precision-machined and anodized for durability. This ensures a solid, corrosion-resistant connection that can withstand long-term use in an observatory or in the field.\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\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e8036-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron CEM120 Mount Head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eMounting to iOptron Tri-Pier or custom piers\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 CEM120 Pier Top 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":52917274575133,"sku":"IOP-8036-120","price":193.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-CEM120-Pier-Top-Adapter-1_317ba819-7214-41f9-beb5-8b5d3bd22d8c.jpg?v=1789141702"},{"product_id":"ioptron-c40-cwsml","title":"iOptron CEM40 CW Shaft Mounting House (Low Latitude)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for the iOptron CEM40 Mount\u003c\/li\u003e\n\u003cli\u003eSolves Counterweight Shaft Collision at Low Latitudes\u003c\/li\u003e\n\u003cli\u003eEnables Unobstructed Meridian Crossing\u003c\/li\u003e\n\u003cli\u003eEssential for Equatorial and Tropical Observing\u003c\/li\u003e\n\u003cli\u003eDirect-Fit Replacement Part\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\u003eCEM40 CW Shaft Mounting House (Low Latitude)\u003c\/h2\u003e\n\u003cp\u003eFor astronomers using the iOptron CEM40 mount near the equator, this Low Latitude Counterweight Shaft Mounting House is an essential upgrade. It repositions the counterweight shaft assembly to provide critical clearance from the tripod legs at very low latitude settings. This modification prevents physical collisions that would otherwise stop tracking, allowing for uninterrupted imaging and observation across the meridian.\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 Meridian Clearance for the CEM40 at Low Latitudes\u003c\/h3\u003e\n\u003cp\u003eA standard CEM40 mount encounters a mechanical limitation at latitudes approaching the equator. As you lower the polar axis, the counterweight shaft angles downward, eventually making contact with the tripod. This accessory is a purpose-built housing that changes the shaft's mounting point, creating the space needed for the mount to operate freely at these low angles without interference.\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 CEM40 Low Latitude CW Shaft Housing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a specialized replacement part for the iOptron CEM40 equatorial mount. Its sole function is to prevent the counterweight shaft from colliding with the mount's tripod or pier when the mount is set to a very low latitude, typical for observers located near the Earth's equator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI live in southern Texas (26° N latitude). Do I need this accessory for my CEM40 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is unlikely. This housing is typically required for latitudes below 10-15 degrees. At 26° North, the standard CEM40 counterweight shaft housing should provide sufficient clearance for all normal operation, including tracking objects across the meridian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill installing this part on my CEM40 affect its payload capacity or tracking?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this part does not alter the fundamental payload capacity or tracking accuracy of the CEM40 mount. It is a purely mechanical component designed to solve a physical clearance issue. You will, of course, need to properly rebalance your telescope after installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the CEM40 Low Latitude housing difficult to install?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation involves removing the original counterweight shaft housing and replacing it with this low-latitude version. While it is a straightforward process for users comfortable with basic mechanical adjustments, we recommend consulting your iOptron CEM40 manual for detailed instructions on accessing and replacing this component.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I leave this Low Latitude housing installed on my CEM40 if I travel to mid-latitudes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you can. While the original housing is optimized for mid-latitudes, the low-latitude version will still function correctly at higher latitudes. There is no need to swap the parts back and forth if you travel with your mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary sign that I need this CEM40 accessory?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary sign is physical interference. If you find that your counterweight bar or the counterweights themselves hit a tripod leg when you are pointing near the celestial meridian, and your latitude is correctly set for your location (e.g., in Colombia, Kenya, or Indonesia), then this part is the solution.\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 colspan=\"2\"\u003eNo specifications available for this product.\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\"\u003eCEM40 CW Shaft Mounting House (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\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":52917274837277,"sku":"IOP-C40-CWSML","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-CEM40-CW-Shaft-Mounting-House-Low-Latitude-1_70c15604-08ae-4ff4-be2b-5f2cecdba498.jpg?v=1789141711"},{"product_id":"ioptron-c26-cwsml","title":"iOptron CEM26 CW Shaft Mounting House (Low Latitude)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables low-latitude operation of the iOptron CEM26 mount\u003c\/li\u003e\n\u003cli\u003ePrevents counterweight shaft collision with tripod or pier\u003c\/li\u003e\n\u003cli\u003eReplaces the standard counterweight shaft housing\u003c\/li\u003e\n\u003cli\u003eEssential for equatorial locations\u003c\/li\u003e\n\u003cli\u003eOfficial iOptron accessory for the CEM26\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\u003eCEM26 CW Shaft Mounting House (Low Latitude)\u003c\/h2\u003e\n\u003cp\u003eFor astronomers operating the iOptron CEM26 mount near the equator, this Low Latitude Counterweight (CW) Shaft Mounting House is an essential accessory. It is specifically designed to replace the standard housing, providing critical mechanical clearance for the counterweight shaft. This modification prevents the shaft from colliding with the tripod or pier legs when the mount is tracking objects at or near the zenith, a common issue at very low latitudes.\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 Zenith Clearance for the CEM26 at Low Latitudes\u003c\/h3\u003e\n\u003cp\u003eA standard German Equatorial Mount's geometry can create a physical conflict at low latitudes. As the polar axis is tilted closer to the horizon, the counterweight shaft swings lower during meridian flips or when tracking objects high overhead. This can lead to a session-ending collision between the end of the shaft and a tripod leg.\u003c\/p\u003e\n\u003cp\u003eThe iOptron CEM26 Low Latitude CW Shaft Mounting House solves this problem by altering the mounting point of the shaft. This provides the necessary clearance to allow full, unimpeded movement of the Right Ascension axis, ensuring you can image any part of the sky from your equatorial observing site without interference.\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 CEM26 Low Latitude CW Shaft Mounting House?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a specialized replacement part for the iOptron CEM26 mount. Its purpose is to prevent the counterweight shaft from hitting the tripod or pier when the mount is used at very low latitudes (i.e., near the Earth's equator). It provides the necessary physical clearance for the mount to operate through its full range of motion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this CEM26 accessory necessary near the equator?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen you set the latitude of a German Equatorial Mount to a low number (e.g., under 10-15 degrees), the polar axis becomes more horizontal. As the mount tracks an object passing overhead through the meridian, the counterweight shaft swings very low and can physically strike the mount's own tripod or pier. This housing changes the shaft's position to avoid this collision.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen tracking the Orion Nebula (M42) from a low latitude, how does this CEM26 part help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFrom low latitudes, the Orion Nebula (M42) culminates very high in the sky, close to the zenith. As your CEM26 mount tracks it across the meridian, the counterweight shaft will be at its lowest point. Without this low-latitude housing, the shaft would likely collide with your tripod, interrupting tracking and potentially damaging your equipment. This part provides the clearance needed for a smooth, uninterrupted pass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm setting up my CEM26 in Panama for astrophotography. Is this part required?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, most likely. Panama is at a very low northern latitude (around 9°). At this latitude, you will almost certainly experience collisions between the counterweight shaft and tripod when imaging objects that pass near the zenith. This Low Latitude Housing is considered a mandatory accessory for reliable imaging from such locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the CEM26 Low Latitude Housing difficult to install?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation involves removing the stock counterweight shaft housing and replacing it with this low-latitude version. While it requires basic mechanical aptitude and tools, it is a straightforward process. You should refer to iOptron's official documentation for detailed installation instructions to ensure it is done correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this accessory affect the payload capacity or tracking of my CEM26 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this part does not alter the fundamental performance of the CEM26 mount. It is a purely mechanical component designed to solve a clearance issue. Your mount's payload capacity and tracking accuracy will remain the same.\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 CEM26 Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eLow Latitude Observing (Equatorial Regions)\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\"\u003eCEM26 Low Latitude CW Shaft Housing\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":52917275459869,"sku":"IOP-C26-CWSML","price":70.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-CEM26-CW-Shaft-Mounting-House-Low-Latitude-1_c2534169-6a93-48ba-9e80-60a4d13919ab.jpg?v=1789141727"},{"product_id":"ioptron-c2633","title":"iOptron Polar Scope Kit for CEM26","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned specifically for the iOptron CEM26 mount\u003c\/li\u003e\n\u003cli\u003eProvides a direct, through-the-axis optical view of the celestial pole\u003c\/li\u003e\n\u003cli\u003eEnables fast and intuitive polar alignment without a computer\u003c\/li\u003e\n\u003cli\u003eFeatures an engraved reticle for aligning on Polaris or Sigma Octantis\u003c\/li\u003e\n\u003cli\u003eIdeal for field use where power or laptop access is limited\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\u003ePolar Scope Kit for CEM26\u003c\/h2\u003e\n\u003cp\u003eThis Polar Scope Kit adds a fast, reliable, and computer-free alignment capability to your iOptron CEM26 equatorial mount. By providing a direct optical view through the mount's right ascension axis, this accessory allows you to quickly and accurately align with the celestial pole, establishing the foundation for precise tracking essential for astrophotography.\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\u003eFast, Direct Polar Alignment for Your CEM26\u003c\/h3\u003e\n\u003cp\u003eThe CEM26 Polar Scope simplifies one of the most critical steps in setting up an equatorial mount. Instead of relying on software or drift alignment routines, you can simply look through the eyepiece, identify the pole star using the etched reticle, and make the necessary altitude and azimuth adjustments. This method is exceptionally fast and intuitive, making it perfect for getting your rig aligned and imaging in minutes.\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\u003eOptical Scope vs. iPolar: A Reliable, Computer-Free Alternative\u003c\/h3\u003e\n\u003cp\u003eWhile iOptron's electronic iPolar system offers incredible precision, the optical Polar Scope provides a distinct advantage: complete independence from technology. It requires no power, no drivers, and no laptop, making it an indispensable tool for remote dark-sky sites or any situation where you want to minimize complexity and potential failure points.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiOptron iPolar's Advantage:\u003c\/strong\u003e The primary benefit of the iPolar is its high-precision digital plate solving, which can achieve a more accurate alignment by compensating for atmospheric refraction and eliminating the need to know the exact orientation of Polaris on a reticle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis Polar Scope's Advantage:\u003c\/strong\u003e Its strength is simplicity and reliability. There are no cables to snag, no software to crash, and it works instantly in any condition where you can see the pole star. For visual observers or wide-field imagers, its accuracy is more than sufficient 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\"\u003eWhy choose this optical polar scope for my CEM26 over the electronic iPolar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary reason is \u003cstrong\u003esimplicity and independence\u003c\/strong\u003e. This optical scope requires no power, laptop, or software drivers. It is an ideal choice for astronomers who want a robust, minimalist setup for field use, or as a reliable backup to an electronic system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the CEM26 Polar Scope work in the Southern Hemisphere?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The reticle is designed for use in both hemispheres. It will include markings to correctly position your CEM26 mount on Sigma Octantis, the Southern Hemisphere's pole star, in addition to Polaris for northern observers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the reticle on the CEM26 Polar Scope illuminated?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile specific features like illumination are not detailed, most modern polar scopes include an adjustable LED illuminator to make the reticle visible against a dark sky. This allows you to see the alignment markings without sacrificing your dark adaptation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I still need to polar align my CEM26 for visual-only observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, a good polar alignment is crucial even for visual use. It ensures the mount's GoTo system points accurately and that objects stay centered in the eyepiece for extended periods without constant correction. A quick alignment with the CEM26 Polar Scope significantly improves the observing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does using the CEM26 Polar Scope compare to drift alignment for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Polar Scope provides a very fast and close initial alignment, often sufficient for imaging with short to medium focal length telescopes. \u003cstrong\u003eDrift alignment\u003c\/strong\u003e is a more time-consuming but precise method that can fine-tune the alignment to a higher degree of accuracy, which is beneficial for long-exposure imaging with large telescopes. Many imagers use the polar scope to get close, then perform a quick drift alignment to perfect it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I install the Polar Scope Kit for the CEM26 myself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the kit is designed for user installation. It typically involves threading the polar scope into the mount's RA axis housing. The process is straightforward and can be completed in a few minutes with basic tools.\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 CEM26 Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlignment Method\u003c\/td\u003e\n\u003ctd\u003eOptical via Etched Reticle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eNone for scope; illuminator may require batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis is an accessory kit. Contents to be confirmed.\u003c\/p\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":52917275722013,"sku":"IOP-C2633","price":181.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-Polar-Scope-Kit-for-CEM26-1_509b2606-1e53-498f-8774-9be6028ee872.jpg?v=1789141736"}],"url":"https:\/\/davidastro.com\/collections\/ioptron-cem-center-balanced-equatorial-mounts.oembed","provider":"David Astro","version":"1.0","type":"link"}