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Celestron CGE Pro 1100

The CGE Pro 1100 Schmidt-Cassegrain Telescope is part of Celestron's "Top-of-the-Line" German Equatorial mounted astronomical telescopes. This is a large telescope by any measure, yet it is still portable enough to be taken to dark skies. It's eleven-inch Schmidt-Cassegrain optics gather 40% more than the smaller 9.25" model. This instrument is made for astrophotograhy; visual users may prefer something lighter such as the CGEM 1100.

Item #ProductStock StatusPriceShipping
11087Celestron CGE Pro 1100
This item ships direct from Celestron in Torrence, California. Drop shipment is not available to residents of California. Call for current delivery lead time.
$6,999.00Get Shipping Quote
Celestron CGE Pro 1100 Schmidt-Cassegrain Telescope

Celestron CGE Pro 1100 - General Features

  • 11" f/10 Schmidt-Cassegrain telescope
  • Celestron premium StarBright XLT coatings
  • CGE PRO computerized Equatorial mount
  • Schmidt-Cassegrain mechanism that moves the primary mirror to adjust focus is supported by two pre-loaded ball bearings, minimizing the "mirror flop" typical of bushing focus mechanisms
  • Heavy duty stainless steel tripod adjustable from 38 - 55"
  • 9x50 finderscope to help accurately find objects
  • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky

CGE Pro Computerized Mount Features

  • Proven NexStar computer control technology
  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • New All-Star Polar Alignment routine for both Northern and Southern Hemispheres
  • Software Features include: Database Filter Limits, Hibernate, five alignment methods and user-defined slew limits
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable star; solar systems; objects and asterisms
  • Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
  • 12VDC Servo Motors with integrated optical encoders
  • Permanent programmable periodic error correction (PEC) - corrects for periodic tracking errors inherent to all worm drives
  • Drive Motors - High quality motors with seven slot skewed armature to minimize magnetic cogging for quiet operation and long life. Precision made cut-steel gears in gearbox for Improve tracking precision
  • Bearing and Shaft - Main shafts are made from 1.57" diameter steel tubing with .40" wall thickness with two preloaded 2.68" O.D. tapered roller bearings on each axes
  • Precision worm drive system - .75" pitch dia. precision made steel worm preloaded with two .87" OD ball bearings to minimize run-out (a source of periodic error). 255 tooth 6" pitch dia. precision made worm wheel with enveloping brass teeth
  • Spring loaded DEC worm to minimize backlash and makes guiding easy
  • 4 point RA and DEC clutch system for no-slip pointing precision
  • Autoguide port, PC port and auxiliary ports located on the electronic pier for long exposure astrophotography
  • Latitude range: 10° to 65° northern or southern hemispheres
  • RS-232 communication port on hand control to control the telescope via a personal computer
  • Includes NexRemote telescope control software for remote control of your telescope via computer
  • GPS-compatible with optional CN16 GPS Accessory (93967)

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Optical Specifications: Celestron CGE Pro 1100
Type Schmidt-Cassegrain
Aperture (mm) 279.4 mm
Aperture (in.) 11 inches
Focal Length 2800 mm
Focal Ratio f/10
Magnification (w/supplied eyepiece) 70X
Limiting Visual Stellar Magnitude <p><b>Limiting Stellar Magnitude</b><br /> This is a measure of the faintest star that can be seen with a telescope under ideal conditions. We include this figure for the purpose of comparing two telescopes of different apertures using a consistent scale. Many manufactures publish this specification. Unfortunately manufactures use different methods to calculate this figure, rendering the numbers useless for direct head to head comparison of different brands of telescopes. </p> <p>Limiting stellar magnitude is the sum of the naked eye limiting magnitude and the telescopic gain. The naked eye limiting magnitude varies by location due to local light pollution; therefore, it is an assumption. This figure could be 6.5 or higher at some of the darkest locations, but less than 2 in the middle of a large city. Our calculations assume a figure of 5, which one might typically find 30-40 miles from a major urban area. </p> <p>Telescopic gain is a direct function of aperture. No attempt has been made to compensate for the affects of central obstructions or different types of optical coatings.</p> 14.8 Magnitude
Accessories and Features
Included Eyepiece(s) 40mm Plossl
Finder 9x50 Optical
Go-To System Celestron NexStar system with 40,000+ object library. Flash upgradeable via the Internet.
Star Diagonal 1.25-inch prism type
Accepts 2" Eyepieces <p><b>Telescope Eyepiece Formats</b><br /> Virtually all telescope eyepieces available today conform to one of two barrel diameter standards: 1.25 or 2 inches. Most amateur astronomers will be perfectly content with 1.25" eyepieces. Two-inch eyepieces have only one inherent advantage. That advantage is a potentially larger field of view, but not every telescope can take advantage of that potential. </p> <p>A Telescope and eyepiece work together to collect parallel light rays over a large area, compress those light rays down into a smaller area, and the re-orient them so that they are nearly parallel once again. Essentially light arriving at a telescope with any given aperture is compressed into a smaller aperture or exit pupil. The ratio of the telescope aperture to eyepiece exit pupil determines the magnification.</p> <p>There are cases at very low magnifications where the eyepiece barrel diameter becomes the constraint on maximum field of view. The eyepiece barrel itself actually blocks some of the available light that the telescope is collecting, thus limiting the field of view. Two-inch eyepieces overcome this constrain by allowing a larger light cone to enter the eyepiece. We must conclude this discussion by restating that 2" eyepieces have no inherent advantage over 1.25" eyepieces other than the potential for a larger field of view when used with a telescope capable of benefiting from that advantage. </p> No
Adaptable for 2" Eyepieces <p><b>Two-inch Eyepiece Upgrade</b><br /> Some telescopes that are factory configured for 1.25" eyepieces can be upgraded to accommodate 2" eyepieces. Other telescopes are designed to handle only 1.25" eyepieces and cannot be upgraded due to their focuser size or other constraints. </p> <p>Sometimes this upgrade is possible but not recommended. This could be due to clearance issues caused by the addition of a larger 2" star diagonal,which in some cases will bottom out on the base of a fork mounted go-to telescope. This is potentially damaging the drive mechanism. In other cases the light cone exiting the telescope may not be large enough to derive any benefit from a 2" eyepiece.</p> Yes
Physical Parameters
Tripod Weight 52 Pounds
Weight, Optical Tube 27.5 Pounds
Weight, Fully Assembled 203.5 Pounds
Mount Weight (excluding tripod and counterweight) 75 Pounds
Counterweights 2x22 Pounds
Optical Tube Length 24 Inches
Eyepiece Calculator
Enter your eyepiece's specifications:
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True Field:
 
Exit Pupil: <p>Exit pupil represents the diameter of the column of light exiting the eyepiece. Magnification is simply the ratio of telescope aperture to exit pupil. Fox example, using a telescope with 100mm aperture and an exit pupil of 2mm yields a magnification of 50X.</p> <p>There are both upper and lower limits to the useful range of exit pupils. The typical human eye pupil dilates to a maximum of 7mm when fully dark adapted. This figure decreases with age. Using an exit pupil that is larger than this upper limit simply spills the light onto an area of the eye not capable of receiving data. At the opposite end of the range, a smaller exit pupil means less area on the eye is collecting data. Images brightness decreases with decreasing exit pupil. Deep space objects grow dimmer rapidly as the exit pupil falls below 1 mm. The planets also start to become noticeably dimmer when the exit pupil falls much below 0.5 mm.</p> <p>Our eyepiece calculator provides warnings and error messages based upon the value of the exit pupil. These are intended to be guidelines as opposed to hard rules. There is no harm in violating these gidelines, but your enjoyment of the telescope may be diminished if you do. </p>