New Celestron CGE PRO 1100 HD Computerized

Description

The CGE Pro 1100 HD combines Celestron’s state of the art CGE Pro 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 Schmidt Cassegrain Telescope (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.

EdgeHD Whitepaper

The Celestron Product Development team has released a whitepaper outlining the technology behind EdgeHD. This paper describes the development goals, design decisions, optical performance, and their practical realization in 8-, 9.25-, 11-, and 14-inch apertures. We include cross-sections of the EdgeHD series, comparative spot diagrams for the EdgeHD and competing “coma-free” Schmidt-Cassegrain designs, a table with specifications for visual and imaging, graphics showing how to place sensors at the optimum back-focus distance, and details on the construction and testing of the EdgeHD telescope series.

To download the Celestron EdgeHD Whitepaper, go to the Support & Download tab.

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 full frame camera chip, the EdgeHD 11″ delivers stars of less than 2 arc seconds.

HD Features

• New aplanatic Schmidt telescope design produces aberration-free images across a wide field of view
• Mirror tension locks hold the primary mirror in place and reduce image shift
• Cooling vents allow hot air to be released from behind the primary mirror
• Fastar compatible for fast f/2 imaging

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
• Custom Rate 9 feature allows you set maximum slew rate
• Tandem mode allows you to star align the mount even when positioned for tandem scope use
• 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 stars; solar system objects and asterisms
• Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
• 12 VDC 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 improved 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
• 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: 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 advanced control of your telescope via computer
• GPS-compatible with optional SkySync GPS Accessory (93969)

Optical Tube Info:
Optical Design:	EdgeHD
Aperture:	279.4mm (11″)
Focal Length:	2800mm (110″)
Focal Ratio:	f/10
Focal Length of Eyepiece 1:	23mm (.91″)
Magnification of Eyepiece 1:	122x
Finderscope:	9×50
Star Diagonal:	2″
Mount Info:
Mount Type:	CGE Pro Computerized Equatorial
Tripod:	Adjustable, 2.75″ Stainless Steel legs
Power Requirements:	Car battery adapter
Highest Useful Magnification:	660x
Lowest Useful Magnification:	40x
Limiting Stellar Magnitude:	14.7
Resolution (Rayleigh):	.5 arc seconds
Resolution (Dawes):	.42 arc seconds
Light Gathering Power (Compared to human eye):	1593x
Apparent Field of View:	.67°
Linear Field of View (@1000 yds):	28 ft (8.53 m)
Secondary Mirror Obstruction:	95mm (3.75″)
Secondary Mirror Obstruction by Diameter:	34%
Secondary Mirror Obstruction by Area:	12%
Optical Coatings:	Starbright XLT Coating
Optical Tube Length:	610mm (24″)
Optical Tube Weight:	27.5 lbs (12 kg)
Counterweight Bar:	5 lbs (2.27 kg)
Weight of Counterweights:	2 x 22 lbs
Slew Speeds:	Nine slew speeds 5.5°/s, 2°/s, .5°/s, 64x, 16x, 8x, 4x, 1x, .5x
Tracking Rates:	Sidereal, Solar and Lunar
Tracking Modes:	EQ North and EQ South
Alignment Procedures:	2-Star Align, Solar System Align, Last Alignment, Quick Align, 1-Star Align
NexStar+ Database:	40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Internal Clock:	Yes
GPS:	Optional SkySync GPS Accessory