Engineered to bridge the gap between their Advanced VX & heavy-duty CGX-L mounts, the Celestron C8-A-XLT CGE Telescope with CGEM II Mountdelivers the performance required for capturing clear images during astrophotography sessions or resolving dim details when observing through an eyepiece. To make it compatible with a wide assortment of optical tube assemblies, Celestron outfitted the CGEM II with a dovetail saddle designed to accept the standard Vixen-style (Celestron's CG-5) and the larger Losmandy (Celestron CGE) dovetail bars.

Through the use of high-torque dual-axis low-cog DC servo motors, optical encoders on the motors, backlash compensation, and Permanent Periodic Error Correction (PPEC) the mount is capable of precise positioning and tracking accuracy to ensure your target object stays centered while constantly improving its performance the more you use it.

The brain of the system is the NexStar+ computer controller, which is equipped with a database of over 40,000 objects, including the planets, stars, nebulae, galaxies, and the complete Messier catalog; it can also be programmed with up 100 custom user-defined objects with filters to create custom object lists. Its intuitive menu-driven user interface makes observing the sky, day and night, fast and easy. Features such as guided tours, extended information on 200 popular objects, and multiple alignment options make the NexStar+ controller an invaluable tool to new users and experienced stargazers alike.

8" (203mm) Schmidt-Cassegrain OTA    2032mm Focal Length, f/10 Focal Ratio    Motorized Computer-Controlled EQ Mount    ISO Compliant Solar Filter    Steel 2" Leg Tripod with Counterweight

• 40-pound payload capacity
• Uninterrupted tracking below meridian to enable observation from a raised location such as a balcony or hilltop
• Internal cables eliminate snag hazards in the dark or when operating the mount remotely
• Counterweight bar with 17-pound counterweight allows you to properly balance your OTA with accessories and imaging systems
• Dual CG-5 (Vixen) and CGE (Losmandy) dovetail saddle make it compatible with most large and small OTAs on the market
• Dedicated autoguider port for making corrections when astroimaging
• Runs on the included 12V DC power cord

• Dual-axis low-cog DC servo motors
• High-torque motors for helping to smoothly drive heavier loads
• Dual motor encoders improve tracking and location accuracy with reduced vibrations
• Clutch levers for manual movement, levers are longer than normal to make tightening and loosening easier

• 40,000+ object database with filters for creating custom object lists
• 100 user-defined programmable celestial or terrestrial objects
• Enhanced information on over 200 objects
• Nine slew speeds: 4°/sec, 2°/sec, 1°/sec, 0.3°/sec, 32x, 16x, 8x, 4x, 2x
• Three tracking rates: Sidereal, Solar, Lunar
• Solar System alignment method allows to view the moon and planets during the day
• Built-in polar alignment program to polar align on any star in the sky
• Sky Tour Mode: System seeks out the best objects for the date and time and automatically slews to them
• Identify Mode: Use to identify an unknown object in the field of view, or to find other celestial objects that are close to where the user is viewing
• Anti-backlash compensation: Trains out the intrinsic play between gears for more precise slewing and tracking
• Permanent Periodic Error Correction (PPEC): System learns its internal tracking errors and improves over time for more precise tracking, requiring fewer corrections
• Built-in instructions guide you through the alignment procedures
• 4-line, 18-character LCD display with a 19-button fiber-optic backlit LED keypad
• RS-232 communication port on hand control to control the telescope via a personal computer
• Supports English, French, Italian, German, and Spanish

• Solar system: Seven planets, moon, sun, and Pluto
• Custom lists of all the brightest stars, double stars, variable stars, and asterisms
• Custom lists of galaxies, nebulae, and clusters, as well as the complete Messier catalog and select NGC objects

Related Questions and Answers

Q: 1. Is this scope and EQ mount compatible with Starsense and SkyPortal?

A: Yes this Scope will be compatible with both Models.

Q: 2. What is the difference between Celestron C11-A and Celestron C11. Does Celestron C11-A have any improvements?

A: Sorry but B&H no longer has a listing for the Celestron C11. only the Celestron C11-A XLT 11" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGE Dovetail) BH #CEC11AXLT • MFR #91036-XLT

Q: 3. Is the tripod section on this mount the same tripod as is used in the Celestron VX Advanced mount?

A: No the Celestron CGEM II Tripod that comes with the Celestron CGEM II GoTo German Equatorial Mount is not the same tripod that comes with the Celestron Advanced VX GoTo German Equatorial Mount.

Q: 4. What is the primary mirror wavefront error?

A: The Celestron C8-A-XLT CGE 8" f/10 Schmidt-Cassegrain Telescope (OTA Only) has a 1/4 wavefront error.

Q: 5. Does this scope have fastar capability? Thank you.

A: Yes. The Celestron C8-A-XLT CGE 8" f/10 Schmidt-Cassegrain Telescope is Fastar compatible.

Q: 6. How do you use this mount at 6 North latitude?

A: It has a 15-70° latitude adjustment range. Observers at lower latitudes will prefer to leave the alignment peg between two legs to avoid the counterweight from making contact with the tripod leg when the counterweight is in the lowest part of its swing.

Q: 7. What mount is suitable for C8-A-XLT?

A: With an instrument load capacity of 30 lbs, the Advanced VX Mount and Tripod Item #: 91519 is a perfect match for the C8-A-XLT CGE Schmidt-Cassegrain optical tube.

Q: 8. Is the mount compatible with NexStar SE mount?

A: The Celestron C8-A-XLT CGE 8" f/10 Schmidt-Cassegrain Telescope (OTA Only) uses a larger CGE plate and will not fit in the smaller Vixen style plate that the Nexstar uses.

Q: 9. ‘Is the Celestron XLT Omni 120mm F/8.3 EQRefractor telescope a good telescope for a beginner

A: The Celestron XLT Omni 120mm F/8.3 EQ Refractor telescope is designed for the intermediate astronomer who has a good knowledge of telescopes due to its mount and size. However, it can be a telescope for the beginner to grow with.

Q: 10. Can the Skywatcher AZ-EQ5 carry this OTA?

A: Yes this OTA will work on the Sky-Watcher AZ-EQ5 MULTI-PURPOSE GOTO MOUNT. The Load Capacity on the Mount is 30 lbs, and the OTA weigh's 27.5 lbs.