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Celestron CGEM-800 Computerized Telescope 8.0" Catadioptric Telescope Kit

Item # CT11097 (Part # 11097)
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Discontinued Brand new, USA Warranty
Item Description:
Over 8 inches of aperture and our premium StarBright XLT coatings, the CGEM 800 HD gives you over 800 times the light gathering power than the unaided eye. Supporting an optical tube of only 13 lbs, the unit is the lightest and most portable in its class.

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The CGEM 800 HD combines Celestron's newly designed CGEM Computerized Equatorial mount with its new EdgeHD optical system. With over 8 inches of aperture and our premium StarBright XLT coatings, the CGEM 800 HD gives you over 800 times the light gathering power than the unaided eye.  Supporting an optical tube of only 13 lbs, the CGEM 800 HD is the lightest and most portable in its class.

New Optical Design
The EdgeHD optical system combines all the compact power popularized by the SCT and combines it with an improved high definition optical system for wide field, astrograph quality images.
As a visual instrument  EdgeHD optics delivers pinpoint images even with your widest field eyepiece.  You can search for all of the Messier Catalog objects, and see hundreds of other equally interesting NGC, IC and Caldwell objects with amazing clarity. For astroimaging, the EdgeHD optics produce aberration-free images across your favorite CCD or DSLR camera. All EdgeHD optics are designed to produce an extremely flat focal plane precise enough to match the strict tolerances of the largest commercial ccd detectors, allowing all stars to be in tight focus to the very edge of the chip.

Diffraction Limited
Some companies boast that their telescopes give diffraction limited stars in the very center of the field of view.  EdgeHD optics not only produce diffraction limited stars on axis, but maintain diffraction limited stars across the entire field of view of many of the most popular astrophotography cameras. Even at the very edge of a DX format camera chip, the EdgeHD 8" delivers star sizes of less than 1.5 arc seconds.

The EdgeHD 8" optics produce a focal plane more than 3 times flatter than the standard equivalent SCT telescope with diffraction limited stars across the entire Nikon 300 or Canon 40D sensor!

CGEM 800 HD - General Features

CGEM 800 HD - HD Features

CGEM 800 HD - Computerized Mount Features

Optical Design: EdgeHD Optics
Aperture: 203.2 mm (8 in)
Focal Length: 2032 mm (80 in)
Focal Ratio: 10
Finderscope: 9x50
Mount: CGEM Computerized Equatorial
Optical Tube: Aluminum
Optical Coatings: Starbright XLT Coating
Eyepiece 1: 40 mm (1.57 in)
Magnification 1: 51 x
Star Diagonal: 1.25

Tripod: Adjustable, Stainless Steel
CD ROM: NexRemote control software with RS232 cable
Power Supply: Car battery adapter
Highest Useful Magnification: 480 x
Lowest Useful Magnification: 29 x
Limiting Stellar Magnitude: 14
Eyepiece 1 Field of View: 0.84 degrees
Light Gathering Power: 843 x
Secondary Mirror Obstruction: 2.7 in (68.58 mm)
Secondary Mirror Obstruction by Area: 11.4 percent
Secondary Mirror Obstruction by Diameter: 33.8 percent
Resolution (Rayleigh): 0.69 arcsec
Resolution (Dawes): 0.57 arcsec
Gear: Steel worm gear and 90mm pitch diameter brass worm wheel
Motor Drive: Low cog DC Servo motors with encoders, both axes
Computer Hand Control: Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons

Slew Speeds: Nine slew speeds: 5 ?/sec, 2 ?/sec, 1 ?/sec, 64x, 16x, 8x, 4x, 1x, .5x
Tracking Rates: Sidereal, Solar and Lunar
Tracking Modes: EQ North and EQ South
Alignment Procedures: 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Software Precision: 24bit, 0.08 calculation
Database: 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Power Requirements: 12 VDC 1.5 Amp
GPS: Optional CN16 Accessory
Counterweights: 1 x 17 lb
Optical Tube Length: 17 in (431.8 mm)
Telescope Weight: 88 lb (39.92 kg)

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