{"title":"iOptron GEM German Equatorial Mounts","description":"\u003cp\u003eiOptron GEM mounts are German equatorial mounts in the classic layout, with the counterweight shaft opposite the telescope, offering GoTo tracking for imaging and visual use. This collection includes the GEM28 and the larger GEM45.\u003c\/p\u003e\u003cp\u003eThe GEM28 suits small refractors and portable imaging rigs, while the GEM45 carries heavier setups. A polar scope kit for the GEM28 helps with accurate polar alignment in the field.\u003c\/p\u003e","products":[{"product_id":"ioptron-gem45-mount","title":"iOptron GEM45 Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e45 lb (20 kg) payload on a 17.5 lb (7.9 kg) mount head\u003c\/li\u003e\n\u003cli\u003e\u0026lt;±7.5 arcsec PE with PPEC; \u0026lt;0.3 arcsec RMS on encoder-equipped EC versions\u003c\/li\u003e\n\u003cli\u003eΦ110mm, 216-tooth zero-backlash worm wheels on both axes\u003c\/li\u003e\n\u003cli\u003eGo2Nova controller with 212,000+ object database and built-in GPS\u003c\/li\u003e\n\u003cli\u003eInternal iPolar electronic polar scope on every version\u003c\/li\u003e\n\u003cli\u003eComplete LiteRoc tripod packages or head-only versions in a hard case\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 GEM45 Mount\u003c\/h2\u003e\n\u003cp\u003eThe iOptron GEM45 mount delivers next-generation imaging stability with a 45 lb payload capacity from a mount head that weighs only 17.5 lbs, a class-leading 2.53 payload-to-weight ratio. Massive Φ110mm, 216-tooth zero-backlash worm wheels and a precision stepper motor drive deliver a native periodic error of less than ±7.5 arcseconds, while the encoder-equipped GEM45EC tightens that to less than 0.3 arcseconds RMS. Every version includes the internal iPolar electronic polar scope and a Go2Nova controller with a 212,000+ object database. The GEM45 is offered in several versions: complete packages with the 1.75\" LiteRoc tripod and counterweight (with options for a hard case, iGuider or a NUC-ready saddle), and head-only versions in a hard case for imagers who already own a tripod or pier.\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\u003e45 lb Payload on a 17.5 lb Mount Head\u003c\/h3\u003e\n\u003cp\u003eThe GEM45 achieves its 2.53 payload-to-weight ratio through an all-metal, CNC-machined structure and oversized core components. Both the Right Ascension and Declination axes are built around solid Φ45mm steel shafts and large Φ68mm bearings, providing the rigidity to carry heavy instrument packages without sacrificing stability. The 17.5 lb mount head is easy to transport to dark-sky sites, yet it supports imaging systems up to 45 lbs, from long refractors to 8\" and 9.25\" SCT or R-C setups with cameras and guide scopes.\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\u003e\u0026lt;±7.5 arcsec PE Standard, \u0026lt;0.3 arcsec RMS with the EC Encoder\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the GEM45's tracking system are two Φ110mm, 216-tooth brass worm wheels engineered for zero backlash. Driven through a synchronous belt by a 1.8° stepper motor with 128 micro-steps, the system achieves a resolution of 0.08 arcseconds. On the standard GEM45, this drivetrain delivers a native periodic error of less than ±7.5 arcseconds, which can be further reduced with Permanent Periodic Error Correction (PPEC) for smooth, tightly guided long exposures.\u003c\/p\u003e\n\u003cp\u003eGEM45EC versions add a high-resolution encoder and Real-time PEC (RPEC) that correct worm gear error as it happens, for a native tracking accuracy of less than 0.3 arcseconds RMS. This level of precision can eliminate the need for autoguiding on short-to-medium exposures, even with long focal length telescopes, and makes guiding smoother when you do use it.\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 with a 212,000+ Object Database\u003c\/h3\u003e\n\u003cp\u003eNavigating the night sky is managed by the Go2Nova® 8407+ hand controller, which contains a database of over 212,000 celestial objects on an 8-line LCD. Once aligned, the mount can slew to any target at up to 4.5° per second. An integrated GPS automatically inputs the correct time and location, and the ST-4 guiding port and USB communication port provide standard connectivity for autoguiding and computer control.\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 iPolar and 3A Power for Cable Management\u003c\/h3\u003e\n\u003cp\u003eThe GEM45 is designed to minimize setup time and potential cable snags. The built-in iPolar electronic polar scope provides fast, highly accurate polar alignment directly on your computer screen, even when Polaris is obstructed. An advanced cable management system offers a DC12V (3A) power port, a USB port and an ST-4 guide port near the dovetail saddle, so you can power cameras and accessories without loose wires hanging from the telescope. Power draw is only 0.6A while tracking, extending battery life on long nights at remote sites, and the mount operates from -10°C to 40°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Saddle Plate:\u003c\/strong\u003e The 6\" dual saddle accommodates both Losmandy-D and Vixen-style dovetail bars, so you can switch optical tubes without changing adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Zero Search:\u003c\/strong\u003e The mount automatically finds its mechanical zero position, which is critical for accurate GoTo performance and remote operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-Down Memory:\u003c\/strong\u003e If power is accidentally disconnected, the mount remembers its position and alignment, so you can resume your session without starting over.\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 GEM45 Version\u003c\/h3\u003e\n\u003cp\u003eAll versions share the same 45 lb payload, 17.5 lb mount head, internal iPolar, Go2Nova hand controller, counterweight shaft and AC adapter. They differ in tracking accuracy (standard or EC encoder), in whether a LiteRoc tripod and counterweight are included, and in accessories such as the hard case, iGuider or NUC-ready saddle.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGEM45 w\/ iPolar \u0026amp; LiteRoc:\u003c\/strong\u003e The essential imaging package with the 1.75\" LiteRoc stainless steel tripod and an 11 lb (5 kg) counterweight. No hard case is included in this version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGEM45 w\/ iPolar, Case \u0026amp; LiteRoc:\u003c\/strong\u003e The same complete package plus a hard carrying case, the best all-round choice for imagers who travel to dark sites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGEM45 w\/ iPolar, iGuider, Case \u0026amp; LiteRoc:\u003c\/strong\u003e Adds the iGuider guiding camera built into the dovetail saddle, for autoguiding without mounting a separate guide scope and camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGEM45 NUC-Ready and GEM45EC NUC-Ready (w\/ iPolar, Case \u0026amp; LiteRoc):\u003c\/strong\u003e A saddle ready to carry an Intel NUC mini computer at the front, with dedicated NUC power, LAN and USB connections in the cable management system. The NUC computer itself is not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGEM45EC w\/ iPolar, Case \u0026amp; LiteRoc:\u003c\/strong\u003e The encoder version with \u0026lt;0.3 arcsec RMS tracking, for unguided imaging, scientific work such as photometry, or imagers who want the most precise tracking before adding a guider.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGEM45 Head Only and GEM45EC Head Only (w\/ iPolar \u0026amp; Case):\u003c\/strong\u003e The mount head, hand controller, counterweight shaft and AC adapter in a hard case. No tripod and no counterweight are included, making these ideal if you already own a LiteRoc tripod, a pier or suitable counterweights.\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 GEM45 vs. CEM40: 45 lbs vs. 40 lbs and Two Mount Designs\u003c\/h3\u003e\n\u003cp\u003eThe GEM45 and its sibling, the CEM40, offer similar payload capacities but different design philosophies. The choice depends on your primary use case and telescope type.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiOptron CEM40 Advantage:\u003c\/strong\u003e The center-balanced design places the telescope's center of gravity directly over the tripod, increasing stability for its weight. It also allows operation at very low latitudes without the counterweight shaft colliding with a tripod leg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiOptron GEM45 Advantage:\u003c\/strong\u003e The classic German equatorial design is familiar and intuitive to balance, and it provides maximum clearance for long optical tubes such as refractors, so the back of the telescope will not strike the mount or a tripod leg near the meridian and zenith. The GEM45 also carries a slightly higher payload of 45 lbs compared to the CEM40's 40 lbs.\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 GEM45 versions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAll versions share the same mount mechanics, \u003cstrong\u003e45 lb payload\u003c\/strong\u003e, internal iPolar and Go2Nova controller. The standard GEM45 has a native periodic error of \u003cstrong\u003e\u0026lt;±7.5 arcseconds\u003c\/strong\u003e with PPEC, while GEM45EC versions add a high-resolution encoder for \u003cstrong\u003e\u0026lt;0.3 arcseconds RMS\u003c\/strong\u003e. LiteRoc versions include the 1.75\" LiteRoc tripod and an 11 lb (5 kg) counterweight; Head Only versions include neither. Beyond that, versions add a hard case, the saddle-mounted iGuider guiding camera, or a NUC-ready saddle (NUC computer not included).\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 GEM45 Head Only version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe GEM45 Head Only and GEM45EC Head Only versions include the mount head with internal iPolar, Go2Nova 8407+ hand controller, counterweight shaft, AC adapter (100-240V) and a hard carrying case. \u003cstrong\u003eA tripod and counterweight are not included.\u003c\/strong\u003e To complete your setup, add a sturdy tripod or pier such as the iOptron LiteRoc 1.75\" and at least one counterweight sized to balance your telescope, plus a 12V DC battery pack if you image away from mains power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the practical imaging payload for the iOptron GEM45?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the iOptron GEM45 has a maximum payload of \u003cstrong\u003e45 lbs\u003c\/strong\u003e, a common rule of thumb for long-exposure astrophotography is to stay between 50-60% of the maximum capacity. This suggests a comfortable imaging payload of around \u003cstrong\u003e22-27 lbs\u003c\/strong\u003e, which is ample for most refractor and 8\"-9.25\" SCT or R-C setups with cameras and guide scopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the internal iPolar on the GEM45 simplify polar alignment?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eiPolar\u003c\/strong\u003e is an integrated electronic polar scope that looks through the right ascension axis. Instead of kneeling down at a traditional polar scope, you connect the mount to a computer via USB and iOptron's software plate-solves the stars near the celestial pole, showing you exactly how to adjust the altitude and azimuth bolts. You can achieve precise alignment in minutes, even if Polaris is not visible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the GEM45 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, absolutely. A typical 8\" Schmidt-Cassegrain Telescope (SCT) with a camera, guide scope, and other accessories weighs between 20-25 lbs, well within the \u003cstrong\u003e45 lb payload capacity\u003c\/strong\u003e of the GEM45. The standard mount's \u0026lt;±7.5 arcsecond tracking with PPEC, or the EC versions' \u0026lt;0.3 arcsecond RMS tracking, provides a stable platform for detailed long exposures of targets like M42.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to autoguide the GEM45EC when imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThanks to its \u003cstrong\u003e\u0026lt;0.3 arcsecond RMS tracking accuracy\u003c\/strong\u003e, the GEM45EC allows excellent unguided exposures of several minutes, depending on your focal length and polar alignment accuracy. For capturing the faint outer arms of M31 with very long exposures (5-10 minutes or more), autoguiding is still recommended to correct for atmospheric refraction and residual drift, but guiding will be much smoother and require fewer corrections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the GEM45 NUC-Ready version include a computer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eGEM45 NUC-Ready\u003c\/strong\u003e and \u003cstrong\u003eGEM45EC NUC-Ready\u003c\/strong\u003e versions are designed to carry an Intel NUC mini computer at the front of the dovetail saddle, with dedicated NUC power, LAN and USB connections routed through the mount's cable management system. \u003cstrong\u003eThe NUC computer is not included\u003c\/strong\u003e and must be purchased separately. Both NUC-Ready versions include the LiteRoc tripod, counterweight and hard case.\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\u003eGerman Equatorial Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Payload\u003c\/td\u003e\n\u003ctd\u003e45 lbs (20 kg), excluding counterweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Weight\u003c\/td\u003e\n\u003ctd\u003e17.5 lbs (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\u003e2.53\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\u003e14° ~ 68°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAzimuth Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e± 6°\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 (GEM45); \u0026lt; 0.3 arcsec RMS with encoder (GEM45EC versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error Correction\u003c\/td\u003e\n\u003ctd\u003ePPEC (GEM45); Real-time PEC (RPEC) (GEM45EC versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEncoder\u003c\/td\u003e\n\u003ctd\u003eHigh-resolution encoder (GEM45EC versions only)\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\u003eRA Worm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ110mm, 216 teeth, zero backlash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDEC Worm Wheel\u003c\/td\u003e\n\u003ctd\u003eΦ110mm, 216 teeth, zero backlash\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\u003eRA Axis Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ45mm steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDEC Axis Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ45mm steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRA Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ68mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDEC Bearings\u003c\/td\u003e\n\u003ctd\u003eΦ68mm\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), included with all versions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight\u003c\/td\u003e\n\u003ctd\u003e1 x 11 lbs (5 kg) (LiteRoc versions); not included (Head Only versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003ePrecision stepper motor, 1.8°\/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\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® 8407+ 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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Speed\u003c\/td\u003e\n\u003ctd\u003eMax 4.5°\/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\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\u003eIncluded AC Adapter\u003c\/td\u003e\n\u003ctd\u003e100V ~ 240V\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 (all versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeridian Treatment\u003c\/td\u003e\n\u003ctd\u003eStop (0-20° 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\u003eGuiding Camera\u003c\/td\u003e\n\u003ctd\u003eiGuider built into the dovetail saddle (iGuider version only)\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\u003eGPS\u003c\/td\u003e\n\u003ctd\u003eYes\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 Ports\u003c\/td\u003e\n\u003ctd\u003eDC12V (3A), ST4, USB; NUC-Ready versions add dedicated NUC power, LAN and USB connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNUC Computer\u003c\/td\u003e\n\u003ctd\u003eNot included (NUC-Ready versions accept an Intel NUC at the front of the saddle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod\u003c\/td\u003e\n\u003ctd\u003e1.75\" LiteRoc Stainless Steel (~8 kg) (LiteRoc versions); not included (Head Only versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHard Case\u003c\/td\u003e\n\u003ctd\u003eIncluded with all versions except GEM45 w\/ iPolar \u0026amp; LiteRoc\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\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\"\u003eGEM45 or GEM45EC Mount Head with Internal iPolar\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® 8407+ 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\"\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\"\u003eAC 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\"\u003e11 lb (5 kg) Counterweight\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\"\u003e1.75\" LiteRoc 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\"\u003eHard Carrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (Case 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\"\u003eiGuider Guiding Camera (built into saddle)\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_GEM45_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":"GEM45 w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926169885,"sku":"IOP-7603A-HC","price":4129.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45 w\/ iPolar \u0026 LiteRoc","offer_id":44967926104349,"sku":"IOP-7603A","price":4003.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45 w\/ iPolar, iGuider, Case \u0026 LiteRoc","offer_id":44967926137117,"sku":"IOP-7603AG","price":4297.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45 NUC-Ready w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926202653,"sku":"IOP-7603AN","price":4129.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45 Head Only w\/ iPolar \u0026 Case","offer_id":52917263728925,"sku":"IOP-7620A-HC","price":3695.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45EC w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926235421,"sku":"IOP-7603ECA","price":6229.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45EC NUC-Ready w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926268189,"sku":"IOP-7603ECAN","price":6229.0,"currency_code":"CAD","in_stock":true},{"title":"GEM45EC Head Only w\/ iPolar \u0026 Case","offer_id":52917263761693,"sku":"IOP-7620ECA","price":5809.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-GEM45__25746.1636831866.1280.1280.jpg?v=1684347088"},{"product_id":"ioptron-gem28-mount","title":"iOptron GEM28 Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e28 lbs (12.7 kg) instrument payload capacity\u003c\/li\u003e\n\u003cli\u003e10 lbs (4.5 kg) mount head weight\u003c\/li\u003e\n\u003cli\u003ePayload-to-weight ratio of 2.80\u003c\/li\u003e\n\u003cli\u003eGo2Nova® 8409 controller with ~212,000 object database\u003c\/li\u003e\n\u003cli\u003eIntegrated Wi-Fi and USB for computer control\u003c\/li\u003e\n\u003cli\u003eST-4 compatible autoguiding port\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 GEM28 Mount\u003c\/h2\u003e\n\u003cp\u003eThe iOptron GEM28 Mount delivers an exceptional payload capacity of 28 lbs on a mount head that weighs a mere 10 lbs, achieving a payload-to-weight ratio of 2.80 for unmatched portability. Its 1.8º stepper motors provide a drive resolution of 0.17 arc-seconds for precise tracking, while the Go2Nova® 8409 hand controller puts a database of ~212,000 celestial objects at your fingertips with a maximum slew speed of 6º per second.\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 2.80 Payload-to-Weight Ratio: 28 lbs on a 10 lb Frame\u003c\/h3\u003e\n\u003cp\u003eThe core design philosophy of the GEM28 is to maximize imaging capability while minimizing weight. The all-metal, CNC-machined structure houses robust Φ35mm steel axis shafts and large Φ55mm ball bearings, providing the rigidity needed to support a 28 lb payload without compromising stability. This class-leading 2.80 payload-to-weight ratio means you can carry a larger optical tube to a dark sky site without being burdened by 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\u003e144-Tooth Worm Gears and PPEC: Tracking Below ±12 Arcseconds\u003c\/h3\u003e\n\u003cp\u003eAccurate tracking is driven by a synchronous belt transmission system connected to large, Φ88mm 144-tooth aluminum worm wheels on both axes. This system delivers smooth motion with a native periodic error of less than ±12 arcseconds. For imagers, the mount's Permanent Periodic Error Correction (PPEC) records and corrects the fundamental error of the worm gear, significantly improving unguided tracking and making autoguiding more precise.\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 Wi-Fi and USB: Full ASCOM Control Out of the Box\u003c\/h3\u003e\n\u003cp\u003eThe GEM28 is built for the modern astrophotographer with both built-in Wi-Fi and a standard USB port. This allows for direct connection and control from a PC, laptop, or smart device without requiring extra adapters. Full ASCOM compatibility ensures seamless integration with popular imaging software suites, while a dedicated ST-4 autoguide port provides the connection needed for high-precision, long-exposure deep-sky 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\u003eiOptron GEM28 vs. Celestron Advanced VX: The Portability Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile the Celestron Advanced VX (AVX) is a respected workhorse with a slightly higher 30 lb payload, the iOptron GEM28 holds a decisive advantage in portability and modern features.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Weight:\u003c\/strong\u003e The GEM28's head weighs only 10 lbs, a significant reduction compared to the AVX's 17 lbs. This makes the GEM28 far easier to transport and set up in the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePayload Ratio:\u003c\/strong\u003e With a 2.80 payload-to-weight ratio, the GEM28 is engineered for efficiency, carrying more instrument weight per pound of mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e The GEM28 includes built-in Wi-Fi as a standard feature, offering wireless control that typically requires an optional accessory on competing mounts.\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 real-world imaging payload of the iOptron GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron GEM28 has a stated payload of \u003cstrong\u003e28 lbs (12.7 kg)\u003c\/strong\u003e. For astrophotography, a common rule is to stay at 50-60% of the visual payload. However, due to its rigid design, many users successfully image with setups weighing up to 18-20 lbs, provided the telescope is well-balanced and protected from wind.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the iOptron GEM28 have built-in Wi-Fi for control?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the iOptron GEM28 features \u003cstrong\u003ebuilt-in Wi-Fi\u003c\/strong\u003e. This allows you to control the mount wirelessly using software on your smartphone, tablet, or computer, eliminating the need for a separate Wi-Fi dongle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does Permanent PEC (PPEC) do on the iOptron GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003ePermanent Periodic Error Correction (PPEC)\u003c\/strong\u003e is a feature that analyzes and records the inherent mechanical errors in the mount's worm gear. Once recorded, the GEM28's firmware constantly applies corrections to counteract this error, resulting in smoother, more accurate tracking. This is particularly beneficial for unguided imaging or to improve the performance of an autoguider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the iOptron GEM28 handle an 8\" SCT like a Celestron C8 for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. A typical 8\" SCT optical tube weighs around 12-13 lbs, which is well within the 28 lb payload capacity of the iOptron GEM28. However, an SCT has a long focal length, which magnifies any tracking errors. For successful long-exposure imaging of targets like Jupiter or the Orion Nebula (M42), using an autoguider through the mount's \u003cstrong\u003eST-4 port\u003c\/strong\u003e is highly recommended for the sharpest results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the iOptron GEM28 a good choice for a portable setup with a wide-field refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iOptron GEM28 is an excellent choice for this application. Its low \u003cstrong\u003e10 lb mount head weight\u003c\/strong\u003e and high payload capacity make it ideal for a \"grab-and-go\" imaging rig. Paired with a compact refractor, you can easily transport the entire setup to a dark sky location to capture large targets like the Andromeda Galaxy (M31) or the North America Nebula (NGC 7000).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between the iPolar and AccuAlign options for the iOptron GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese are two different systems for polar alignment available with the iOptron GEM28.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuAlign\u003csup\u003eTM\u003c\/sup\u003e:\u003c\/strong\u003e This is a traditional optical polar scope built into the mount's RA axis. It features a dark-field illuminated reticle that you align with Polaris (in the Northern Hemisphere) to achieve polar alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eiPolar\u003csup\u003eTM\u003c\/sup\u003e:\u003c\/strong\u003e This is an integrated electronic polar scope (a small camera) that connects to a PC. It provides a live view of the sky near the pole and guides you through a simple software routine to achieve a highly accurate alignment, even if Polaris is not visible.\u003c\/li\u003e\n\u003c\/ul\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\u003eGerman Equatorial Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e28 lbs (12.7kg), excluding 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\u003e2.80\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\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\u003ePeriodic Error Correction (PEC)\u003c\/td\u003e\n\u003ctd\u003eYes, Permanent PEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorm Wheels (RA \u0026amp; Dec)\u003c\/td\u003e\n\u003ctd\u003eΦ88mm, 144 teeth, aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxis Shafts (RA \u0026amp; Dec)\u003c\/td\u003e\n\u003ctd\u003eΦ35mm steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearings (RA \u0026amp; Dec)\u003c\/td\u003e\n\u003ctd\u003eΦ55mm ball bearing\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\u003e10º ~ 70º\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\u003ePolar Scope\u003c\/td\u003e\n\u003ctd\u003eAccuAlign TM optical polar scope (model dependent)\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\u003c\/td\u003e\n\u003ctd\u003e10 lbs (4.5kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Shaft\u003c\/td\u003e\n\u003ctd\u003eΦ20 x 200mm, Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft Extension\u003c\/td\u003e\n\u003ctd\u003eΦ20 x 120mm, Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod\u003c\/td\u003e\n\u003ctd\u003eLiteRoc heavy-duty stainless steel tripod (model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eBuilt-in Wi-Fi and USB port\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\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\u003e0.6A (Tracking), 0.9A (GOTO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Adapter\u003c\/td\u003e\n\u003ctd\u003e100V ~ 240V (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrying Case\u003c\/td\u003e\n\u003ctd\u003eIncluded (model dependent)\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\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_GEM28_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 Telescope Mount Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"GEM28 w\/ AccuAlign, Case \u0026 LiteRoc","offer_id":44967926694173,"sku":"IOP-G282B3","price":2449.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ iPolar \u0026 1.5\" Tripod","offer_id":44967926464797,"sku":"IOP-G281A1","price":2027.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ iPolar \u0026 LiteRoc","offer_id":44967926497565,"sku":"IOP-G281A3","price":2449.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ AccuAlign \u0026 1.5\" Tripod","offer_id":44967926530333,"sku":"IOP-G281B1","price":1887.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ AccuAlign \u0026 LiteRoc","offer_id":44967926563101,"sku":"IOP-G281B3","price":2295.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ iPolar, Case \u0026 1.5\" Tripod","offer_id":44967926595869,"sku":"IOP-G282A1","price":2153.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926628637,"sku":"IOP-G282A3","price":2589.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28 w\/ AccuAlign, Case \u0026 1.5\" Tripod","offer_id":44967926661405,"sku":"IOP-G282B1","price":2027.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28EC w\/ iPolar, Case \u0026 1.5\" Tripod","offer_id":44967926726941,"sku":"IOP-G284A1","price":3903.0,"currency_code":"CAD","in_stock":true},{"title":"GEM28EC w\/ iPolar, Case \u0026 LiteRoc","offer_id":44967926759709,"sku":"IOP-G284A3","price":4521.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/iOptron-GEM28__07036.1636832397.1280.1280.jpg?v=1684347090"},{"product_id":"ioptron-g2833","title":"iOptron Polar Scope Kit for GEM28","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOptical Polar Alignment Accessory for iOptron GEM28 Mounts\u003c\/li\u003e\n\u003cli\u003eEnables Fast, Computer-Free Setup\u003c\/li\u003e\n\u003cli\u003eIlluminated Reticle for Easy Sighting of Polaris\u003c\/li\u003e\n\u003cli\u003eIdeal for Field Use and Power-Constrained Setups\u003c\/li\u003e\n\u003cli\u003eInstalls Directly into the RA Axis of the Mount\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 Polar Scope Kit for GEM28\u003c\/h2\u003e\n\u003cp\u003eThis iOptron Polar Scope Kit is the essential accessory for imagers and visual observers who demand a fast, reliable, and power-free method for polar aligning their GEM28 mount. Designed for seamless integration, this optical scope provides a direct view of Polaris and the surrounding stars, allowing you to achieve a precise alignment in minutes without needing a laptop, software, or external power source. It is the definitive solution for grab-and-go setups and expeditions to remote dark-sky sites.\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, Battery-Free Polar Alignment for the GEM28\u003c\/h3\u003e\n\u003cp\u003eThe core function of this polar scope is to simplify and speed up your setup routine. By looking through the mount's right ascension (RA) axis, you can directly see the celestial pole. The etched, illuminated reticle provides clear markings for positioning Polaris correctly, accounting for its offset from the true pole. This purely mechanical and optical process is immune to software glitches, dead batteries, or driver conflicts, offering robust reliability when you're out in the field.\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 Choice for Field Expediency\u003c\/h3\u003e\n\u003cp\u003eWhile the GEM28 mount often includes the electronic iPolar camera, the optical Polar Scope Kit serves a distinct and critical purpose. The iPolar requires a computer and power to function, which isn't always practical at a remote site or for a quick visual session. The optical scope is the ultimate backup and the preferred primary tool for simplicity.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiPolar's Advantage:\u003c\/strong\u003e The electronic iPolar system offers higher precision and does not require you to crouch down to look through the mount. It can also function when Polaris is obscured by clouds or obstacles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Scope's Advantage:\u003c\/strong\u003e The Polar Scope Kit is faster for a \"good enough\" alignment, requires zero power, and is completely self-contained. For visual observing or wide-field imaging, it gets you aligned and observing in a fraction of the time, with no potential for technical troubleshooting.\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 using the iOptron Polar Scope Kit for the GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is \u003cstrong\u003esimplicity and independence from electronics\u003c\/strong\u003e. The Polar Scope Kit for the GEM28 allows you to achieve a precise polar alignment without needing a computer, power supply, or any software. This makes it ideal for quick setups, use at remote locations, or as a reliable backup to electronic methods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the GEM28 Polar Scope Kit require batteries?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the reticle illuminator typically requires a small battery to light up the alignment markings for visibility against the night sky. However, the core function of the scope is optical and does not depend on power to work, unlike electronic alignment cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does installing the Polar Scope Kit affect the use of the iPolar on my GEM28?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Polar Scope Kit and the iPolar camera generally occupy the same space within the mount's RA axis. You will typically need to choose one or the other for installation. This kit is for users who prefer the optical method or have a GEM28 model that did not come with the iPolar pre-installed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Polar Scope Kit compatible with other iOptron mounts like the GEM45?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this kit is specifically designed for the iOptron \u003cstrong\u003eGEM28 mount\u003c\/strong\u003e. Other mounts, like the GEM45, require their own specific polar scope models due to differences in mechanical design and dimensions. Always ensure you are purchasing the correct accessory for your specific mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen would I choose the optical Polar Scope for my GEM28 to image the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor wide-field imaging of large targets like the Orion Nebula (M42) with a short focal length refractor, the alignment precision from the optical Polar Scope is more than sufficient. It allows for a very fast setup, letting you start imaging sooner, which is a major benefit on a cold night or during a short window of clear sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm at a dark site with no laptop. Is the GEM28 Polar Scope Kit my best option for aligning on Polaris?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is the exact scenario where the optical Polar Scope Kit excels. Without a laptop, electronic alignment tools like the iPolar are unusable. The Polar Scope provides a direct, reliable method to align your GEM28 mount using only your eyes, ensuring you can get your imaging or observing session started regardless of your access to power or computers.\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 GEM28 Mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlignment Method\u003c\/td\u003e\n\u003ctd\u003eOptical via RA Axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eNone for scope; battery for reticle illuminator\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_GEM28_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\u003cp class=\"DAV-item-subtitle\"\u003efor GEM28 Mount\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917276770589,"sku":"IOP-G2833","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-GEM28-1_a2e9bdc1-f478-4e48-bbee-d1375d23f6d8.jpg?v=1789141762"}],"url":"https:\/\/davidastro.com\/collections\/ioptron-gem-german-equatorial-mounts.oembed","provider":"David Astro","version":"1.0","type":"link"}