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Description
Celestron C9 1/4-A XLT Overview
- 1Description
- 2Celestron CGEM II GoTo German Equatorial Mount
- 3Celestron CGEM II Tripod with 17 lb Counterweight
- 4Celestron 11 lb Counterweight for the CGEM EQ Mount
- 5Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGEM Dovetail)
The CGEM II 925 Schmidt-Cassegrain Telescope features Celestron's premium StarBright XLT coated optics and the newly redesigned CGEM II computerized equatorial mount. The CGEM II 925 offers the middle ground for those looking to combine portability with high resolution. This telescope is especially at home as a solid platform for long exposure photography with optional CCD cameras or photographic equipment. With over 925 inches of aperture and Celestron's premium StarBright XLT coatings, the CGEM II 925 gives you over 1000 times the light gathering power of the unaided eye.
An update to the venerable CGEM mount, the CGEM II has a fresh, attractive, bold appearance and is capable of carrying Celestron's higher-end SCT optical tubes (up to 11") securely and vibration-free, which is ideal for both imaging and visual observing. Capable of holding 40 lbs of payload and slewing at 5° per second, it makes it easy to instantly point to any of the celestial objects in the database.
Engineered to bridge the gap between their Advanced VX & heavy-duty CGX-L mounts, the Celestron CGEM II GoTo German Equatorial Mount delivers 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.
- 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
The Celestron CGEM II Tripod has 2" diameter steel legs with graduated markings that make it easy to extend the legs to the same height. It comes with a 17 lb counterweight.
Use the Celestron 11 lb Counterweight by itself or with other weights to balance your OTA and accessories on Celestron CG-5, CGEM, CG-4 mounts; or any similar mount with a 0.75" (19mm) center bore hole. A large thumbscrew allows you to lock the weight anywhere along the counterweight shaft to allow for precise balance.
Outfitted with a large aperture, long effective focal length, and their proprietary StarBright XLT optical coatings, the Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope provides power and portability. The coating system consists of anti-reflection coatings on the corrector plate, highly reflective index mirror coatings, and low-absorption/high-transmission glass components to ensure that the maximum amount of light is gathered and transmitted to your eye. This system ensures bright and clear high-contrast images with accurate color rendition across the entire visual spectrum without visible distortion at the edges. Celestron includes a standard 1.25" visual back to accept eyepieces and accessories such as the 25mm eyepiece and 90° diagonal supplied with the optical tube assembly (OTA). This OTA is offered here without a mount or tripod for users who already have a support system. Just ensure the mount's payload capacity exceeds 20 pounds to safely carry the weight and that the mount has a Losmandy-style saddle to match the OTA's CGEM mounting plate.
- 9.25" (235mm) aperture
- f/10 focal ratio
- 2350mm effective focal length
- Schmidt-Cassegrain design optical path
- StarBright XLT optical coatings
- Resolution: 0.59 arcsec (Rayleigh); 0.49 arcsec (Dawes)
- Secondary mirror obstruction: 3.35" (85mm); 36% by diameter; 13% by area
- Maximizes light transmission through the optical path
- Improves color rendition, contrast, sharpness, resolution, and brightness
- Broadband system provides flat wavelength transmission across the entire visual spectrum
- Multi-layer mirror coatings with layers of aluminum, SiO2 (quartz), and TiO2 (titanium dioxide)
- Multi-layer anti-reflective corrector plate coatings with layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide); hafnium has a wider band-pass than the commonly used titanium
- High-transmission water white glass corrector plate limits light loss due to internal absorption
- Optical tube only; a mount and tripod are required for proper use
- Comes with an attached CGEM dovetail plate, which is compatible with all Celestron and select third-party saddles; the plate can be unscrewed
- Mount must have a payload capacity of over 20 lb to safely support the OTA
- Standard threads for Schmidt-Cassegrain telescope optical tubes
- 1.25" eyepiece holder accepts 1.25" eyepieces and accessories
?Eyepiece:
- 1.25" diameter barrel
- Accepts most 1.25" astronomical filters
- 25mm focal length produces 94x magnification
Diagonal:
- 1.25" diameter barrel
- 90° angle places the head in a comfortable viewing position when the scope is aimed at or near the zenith
- Star diagonal corrects view horizontally, but not vertically
Finderscope:
- 6x magnification
- 30mm aperture
- Mounting bracket included
In the Box
- Celestron CGEM II GoTo German Equatorial Mount
- Counterweight Bar
- 17 lb Counterweight
- Hand Controller Holder
- NexStar+ Hand Controller
- 12 VDC Car/Vehicle Power Cord
- Declination Motor Cable
- Limited 2-Year Warranty
- Celestron CGEM II Tripod with 17 lb Counterweight
- Celestron 17 lb Counterweight for the CGEM EQ Mount
- Celestron 11 lb Counterweight for the CGEM EQ Mount
- Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGEM Dovetail)
- 25mm Eyepiece
- 1.25" 90° Diagonal
- SCT Visual Back
- 6x30mm Finderscope
- Description
- Celestron CGEM II GoTo German Equatorial Mount
- Celestron CGEM II Tripod with 17 lb Counterweight
- Celestron 11 lb Counterweight for the CGEM EQ Mount
- Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGEM Dovetail)
Celestron CGEM II GoTo German Equatorial Mount Specs
| Mount Type | Motorized; German Equatorial Dual Fork |
| GoTo Capability | Yes, NexStar+ |
| Payload Capacity | 40 lb / 18.14 kg |
| Motor | Dual Axis |
| Tracking Rates | Lunar, Sidereal, Solar |
| Latitude Adjustment | 15 to 70° |
| Counterweight | 1 x 17.0 lb / 7.7 kg |
| Polar Axis Scope | None |
| Power Source | Vehicle Adapter (Included) |
| DC Input Power | 12 VDC |
| Mounting | To Optical Tube Assembly: Dual Losmandy-/Vixen-Type Saddle |
| GPS | No |
| Wi-Fi | No |
| Dimensions | Not Specified by Manufacturer |
| Weight | 18 lb / 8.2 kg (Tripod) 40 lb / 18.14 kg (Mount) |
| Package Weight | 48 lb |
| Box Dimensions (LxWxH) | 28 x 19.5 x 12" |
Celestron 11 lb Counterweight for the CGEM EQ Mount Specs
| Counterweight Bar | 0.75" / 19.0 mm, diameter |
| Weight | 11.0 lb / 5 kg |
| Package Weight | 11.875 lb |
| Box Dimensions (LxWxH) | 10.4 x 9.6 x 3.5" |
Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGEM Dovetail) Specs
| Optical Design | Schmidt-Cassegrain |
| Aperture | 9.25" / 234.95 mm |
| Focal Length | 2350mm |
| Focal Ratio | f/10 |
| Eyepiece Barrel Diameter | 1.25" / 31.7 mm |
| Diagonal | 90° Star 1.25" / 31.7 mm Barrel |
| Finderscope | 6x30 mm |
| Tripod | None |
| Mount Type | CGEM Dovetail Plate |
| Power Source | None |
| Optical Tube Length | 22" / 55.9 cm |
| Weight | 20 lb / 9.11 kg |
| Package Weight | 29.45 lb |
| Box Dimensions (LxWxH) | 29 x 18 x 16" |
Celestron C9 1/4-A XLT Reviews
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| Quantity | Price |
| 2 | ₹ 535810.1 |
| 3-5 | ₹ 530342.65 |
| 5-10 | ₹ 519407.75 |
| 10+ | ₹ 508472.85 |
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