The Celestron CGEM 1100 HD combines Celestron's newly designed CGEM Computerized Equatorial mount with its new EdgeHD optical system. With an optical tube assembly weighing only 28 lbs., this telescope is still portable enough to be taken to dark skies, and has 89% more light gathering power than an 8" telescope and 40% more than the 9.25". For astrophotography, the German Equatorial mount offers easier balancing, unlimited space at the rear of the telescope tube to mount a camera, and whole sky access. Now you can enjoy all of the NexStar software and database features with the extra stability and portability of a German Equatorial mount.
New Optical Design
The EdgeHD optical system takes all of 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 deliver 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.
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 full frame camera chip, the EdgeHD 11" delivers star sizes of less than 2 arc seconds.
The EdgeHD 11" optics produce a focal plane three-times flatter than the standard equivalent SCT telescope with diffraction limited stars to the very edge of the Nikon 300 or Canon 40D sensor!
A detailed description of EdgeHD technologies can be found here
Click here to read a feature article on the EdgeHD system on Universe Today
CGEM 1100 HD - General Features
CGEM 1100 HD - HD Features
CGEM 1100 HD - Computerized Mount Features
OPTICAL DESIGN : EdgeHD Optics
FOCAL LENGTH : 2800 mm (110.24 in)
APERTURE : 280 mm (11.02 in)
FOCAL RATIO : 10
FINDERSCOPE : 9x50
MOUNT : CGEM Computerized Equatorial
OPTICAL TUBE : Aluminum
OPTICAL COATINGS : Starbright XLT Coatings
EYEPIECE 1 : 23 mm (2 in)
MAGNIFICATION 1 : 122 x
STAR DIAGONAL : 2"
TRIPOD : Adjustable, Stainless Steel
CD ROM : NexRemote control software with RS232 cable
POWER SUPPLY : Car battery adapter
HIGHEST USEFUL MAGNIFICATION : 661 x
LOWEST USEFUL MAGNIFICATION : 40 x
LIMITING STELLAR MAGNITUDE : 14.7
RESOLUTION (RAYLEIGH) : 0.5 arcsec
RESOLUTION (DAWEWS) : 0.41 arcsec
LIGHT GATHERING POWER : 1600 x
EYEPIECE 1 FIELD OF VIEW : 0.67 °
SECONDARY MIRROR OBSTRUCTION : 3.75 in (95.25 mm)
SECONDARY MIRROR OBSTRUCTION BY AREA : 11.6 %
SECONDARY MIRROR OBSTRUCTION BY DIAMETER : 34 %
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 1.5A
GPS : Optional CN16 GPS Accessory
COUNTERWEIGHTS : 2 x 17 lb
OPTICAL TUBE LENGTH : 24 in (609.6 mm)
TELESCOPE WEIGHT : 120 lb (54.43 kg)
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