Celestron CGEM II 925 SCT
The CGEM II 925 Schmidt-Cassegrain Telescope showcases Celestron's exceptional StarBright XLT coated optics, coupled with the newly redesigned CGEM II computerized equatorial mount. Offering a balanced compromise between portability and...
The CGEM II 925 Schmidt-Cassegrain Telescope showcases Celestron's exceptional StarBright XLT coated optics, coupled with the newly redesigned CGEM II computerized equatorial mount. Offering a balanced compromise between portability and high-resolution capabilities, the CGEM II 925 is an excellent choice. It excels as a stable platform for long-exposure photography when used with optional CCD cameras or photographic equipment. Boasting over 925 inches of aperture and benefiting from premium StarBright XLT coatings, the CGEM II 925 delivers more than 1000 times the light-gathering power of the human eye.
Mounting a fresh update to the renowned CGEM mount, the CGEM II features an appealing, contemporary design and is well-equipped to securely hold Celestron's premium SCT optical tubes, accommodating sizes of up to 11 inches without introducing vibrations. This makes it an ideal choice for both imaging and visual observation. With a substantial payload capacity of 40 lbs. and a swift slew rate of 5° per second, users can effortlessly and instantly point to any celestial object within the extensive database.
Ergonomic Design
The CGEM II prioritizes user comfort with its thoughtful design. It incorporates large Altitude and Azimuth adjustment knobs that facilitate quick and effortless polar alignment adjustments. The internal RA and DEC motor wiring ensures not only a clean appearance but also simplifies setup, offering a trouble-free experience.
Innovation
The CGEM II series introduces Celestron's innovative Polar alignment procedure, All-Star™. This pioneering feature empowers users to select any bright star for polar alignment, with the software conducting the necessary calculations and providing assistance throughout the alignment process. Astrophotographers will particularly appreciate the Permanent Periodic Error Correction (PEC), which enables users to mitigate periodic errors associated with the worm gears while retaining the PEC recordings.
Performance
For objects located near the Meridian—an imaginary line spanning from North to South—the CGEM II excels by providing robust tracking capabilities that extend well beyond the Meridian. This ensures uninterrupted imaging during the most favorable portion of the night sky. Equipped with a comprehensive database containing over 40,000 celestial objects, support for 100 user-defined programmable objects, and enhanced information on more than 200 objects, Celestron's CGEM II mount bridges the gap between the portability of the Advanced Series and the precision of the CGE Series. It stands as a perfect choice for both amateur astronomers and astrophotographers seeking a versatile and capable mount.
Specifications
| OPTICAL TUBE INFO: | |
|---|---|
| Optical Design: | Schmidt-Cassegrain |
| Aperture: | 234.95mm (9.25") |
| Focal Length: | 2350mm (93") |
| Focal Ratio: | f/10 |
| Focal Length of Eyepiece 1: | 25mm (0.98") |
| Magnification of Eyepiece 1: | 94x |
| Finderscope: | 6x30 |
| Star Diagonal: | 1.25" Star Diagonal |
| Optical Tube: | Aluminum |
| Highest Useful Magnification: | 555x |
| Lowest Useful Magnification: | 34x |
| Limiting Stellar Magnitude: | 14.4 |
| Resolution (Rayleigh): | 0.59 arc seconds |
| Resolution (Dawes): | 0.49 arc seconds |
| Light Gathering Power (Compared to human eye): | 1127x |
| Secondary Mirror Obstruction: | 85mm (3.35") |
| Secondary Mirror Obstruction by Diameter: | 36% |
| Secondary Mirror Obstruction by Area: | 13% |
| Optical Coatings: | StarBright XLT |
| Optical Tube Length: | 559mm (22") |
| Optical Tube Diameter: | 271.8mm (10.7") |
| Optical Tube Weight: | 20 lbs (9.07 kg) |
| Dovetail: | CGE Dovetail bar |
| MOUNT INFO: | |
| Mount Type: | Computerized Equatorial |
| Instrument load capacity: | 40 lbs (18 kg) |
| Height adjustment range (includes mount and tripod): | 1346mm - 1651mm (53" – 65") |
| Tripod Leg Diameter: | 50.8mm (2") Steel tripod with graduated markings on lower section |
| Latitude adjustment range: | 15° - 70° |
| Mount Head Weight: | 40 lbs (18.14 kg) |
| Accessory Tray: | Yes |
| Tripod Weight: | 20 lbs (9 kg) |
| Weight of Counterweights: | 1 x 17 lbs and 1 x 11 lbs |
| Slew Speeds: | 9 slew speeds - max speed 4.5°/second |
| Tracking Rates: | Sidereal, Solar and Lunar |
| Tracking Modes: | EQ North and EQ South |
| GPS: | N/A |
| Dovetail Compatibility: | Dual saddle plates (CG-5 and CGE saddle) |
| Number of Auxiliary Ports: | 2 AUX Ports (1x Hand control Port and 1x AUX Port for optional accessories) |
| Autoguide Port: | Yes |
| USB Port: | Yes, input on Hand Control |
| Power Requirements: | 12V DC, 3.2 amps |
| Motor Drive: | DC servo motors |
| Alignment Procedures: | 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align |
| Periodic Error Correction: | Yes |
| Computerized Hand Control: | 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 Port for PC connection |
| NexStar+ Database: | 40,000+ objects, 100 user defined programmable objects Enhanced information on over 200 objects |
| Software: | Celestron Starry Night Special Edition Software and SkyPortal App |
| Total Kit Weight: | 98 lbs (44.4 kg) |
| Included Items: | CGEM II Equatorial Head Tripod Accessory Tray 1 x 17 lbs and 1 x 11 lbs counterweights NexStar+ Hand Control DC Power Cable (item#18769) Hand Control Holster |
| Solar Warning |
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| California Residents |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. |
Software and Documentation