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About this product
9.25" Schmidt-Cassegrain optical tube assembly
Celestron's premium StarBright XLT coatings
40 lbs payload capacity
Dual-fit Vixen/CG-5 and Losmandy/CGE dovetail saddle
2" steel legs with height index marks for quick leveling
Internal cabling throughout for worry-free remote operation
Able to track past the meridian allowing seamless imaging
USB hand control to control the telescope via a personal computer
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 our premium StarBright XLT coatings, the CGEM II 925 gives you over 1000 times the light gathering power than the unaided eye.
A fresh 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, you will be able to instantly point to any of the celestial objects in the database.
ERGONOMIC DESIGN
CGEM II was designed to be ergonomically friendly with large Altitude and Azimuth adjustment knobs for quick and easy polar alignment adjustment. The internal RA and DEC motor wiring provides a clean look and an easy and trouble free set up.
INNOVATION
The CGEM II series features Celestron’s innovative Polar alignment procedure called All-Star™. All-Star allows users to choose any bright star, while the software calculates and assists with polar alignment. Another great feature of the CGEM II sure to please astroimagers, is the Permanent Periodic Error Correction (PEC) which will allow users to train out the worm gears periodic errors, while the mount retains the PEC recordings.
PERFORMANCE
For objects near the Meridian (imaginary line passing from North to South), the CGEM II will track well past the Meridian for uninterrupted imaging through the most ideal part of the sky. The CGEM II mount has a robust database with over 40,000 objects, 100 user defined programmable objects and enhanced information on over 200 objects. Celestron's CGEM II mount is the perfect fit between the Advanced Series and CGE Series. Offering the portability of the Advanced Series and the precision of the CGE.
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.