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	Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result. Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.
California Residents	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Software and Documentation

MANUALS:
CGEM II EQ Mount Manual
NexStar Plus Hand Control Manual
Schmidt-Cassegrain Optics Manual
SOFTWARE & FIRMWARE:
CPWI Software
Celestron Firmware Manager (CFM) Software
NexRemote Telescope Control Software
Periodic Error Correction Tool (PECTool)
OTHER PRODUCT FILES:
SCT & EdgeHD Collimation Guide
How to Align a Red Dot Finder to Your Telescope Video
Solar Safety Warning
What are the Sizes of Collimation Screws
Celestron NexStar+ Hand Control Troubleshooting Guide

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Celestron CGEM II 925 SCT

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