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Celestron CGEM 1100 HD, 11" EdgeHD Schmidt-Cassegrain Telescope - Starbright XLT Coating

SKU: CNCGEM1100HD MFR: 11082
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Key Features

  • Experience breathtaking celestial views with the impressive 11-inch aperture of this Schmidt-Cassegrain Telescope.
  • Effortlessly locate over 40,000 celestial objects using the intuitive CGEM Computerized Equatorial mount.
  • Capture stunning, high-resolution astrophotography thanks to the advanced EdgeHD optical design and Starbright XLT coatings.
  • Enjoy crisp, bright images of distant galaxies and nebulae with the powerful 2800mm focal length.
  • Achieve precise tracking for prolonged observation sessions with the reliable equatorial mount and various tracking rates.
  • Discover the wonders of the night sky with exceptional clarity and magnification, perfect for both beginners and experienced astronomers.
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Special Order?Estimated to Ship: 01/30/2026
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Reviews about this item

Review Summary

2009-10-19T21:00:00

Rated 5 out of 5

Great Telescope

One of the nicest telescopes on the market.

Tsalagi

2009-10-14T21:00:00

Rated 4 out of 5

CGEM1100EdgeHD

The scope's optics seem great. The views are fantastic. The mount seems to be more ten stable for visual. The controller quit after about 20min of use. After searching they seem to have trouble with the hand controllers. I rated the scope as very good despite the controller. If they take care of the problem in a timely manner I would raise the rating. If not I would avoid as they would not be trustworthy for other problems.

Stew

Celestron CGEM Telescope Specifications

  • Optical Design

    EdgeHD

  • Aperture (mm)

    280 mm (11 in)

  • Focal Length

    2800 mm (110 in)

  • Focal Ratio

    10

  • Focal Length of Eyepiece 1 (mm)

    23 mm (0.91 in)

  • Magnification of Eyepiece 1

    122 x

  • Finderscope

    9x50

  • Star Diagonal

    2"

  • Mount Type

    CGEM Computerized Equatorial

  • Tripod

    Adjustable, Stainless Steel

  • Power Requirements

    Car battery adapter

  • Highest Useful Magnification

    661 x

  • Lowest Useful Magnification

    40 x

  • Limiting Stellar Magnitude

    14.7

  • Resolution (Rayleigh)

    0.5 arc seconds

  • Resolution (Dawes)

    0.41 arc seconds

  • Light Gathering Power

    1600 x

  • Secondary Mirror Obstruction

    3.75 in (95 mm)

  • Secondary Mirror Obstruction by Diameter

    34%

  • Secondary Mirror Obstruction by Area

    12%

  • Optical Coatings

    Starbright XLT Coatings

  • Optical Tube Length

    24 in (610 mm)

  • Total Telescope Kit Weight

    120 lbs (54 kg)

  • Weight of Counterweights

    2 x 17 lbs

  • Slew Speeds

    Nine slew speeds

  • 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

  • Computer Hand Control

    Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons

  • Database

    40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects

  • GPS

    Optional SkySync GPS Accessory

  • Warranty

    2-year Telescope Warranty

  • UPC Code

    050234110822

About Celestron CGEM Telescope

FEATURED REVIEWS

Great Telescope

By Tsalagi

One of the nicest telescopes on the market.

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 and40% 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 DesignThe EdgeHD optical systemtakes allof 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 commercialCCD detectors, allowing all stars to be in tight focus to the very edge of the chip.
Diffraction LimitedSome 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 ofless 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!

Along with the newly designed optics, the EdgeHD also has a re-designed optical tube guaranteed to help you get the maximum performance from your instrument.
Features Include:
Mirror Locks To hold the mirror in place and reduce image shift during imaging.
Tube Vents - Each vent has an integrated 60 micron micro-mesh filter allowing hot air to be released from behind the primary mirror.
Fastar Versatility All EdgeHD optical tubes are equipped with a removable secondary mirror for fast f/2CCD imaging. Not only does imaging in the FASTAR configuration allow for exposure times that are 25 times faster than at f/10, but also yields a field of view five times wider. A perfect combination for imaging your favorite wide field objects in a fraction of the time. (FASTAR imaging requires a third party lens assembly in place of the secondary mirror).
Axiom Eyepiece - EdgeHD 11" optical tubes come with Celestron's top of the line Axiom eyepiece. With a 23 mm focal length and 82 AFOV you get an incredible combination of power and wide field of view. Plus each Axiom eyepiece is optimized to deliver pinpoint images when used with a flat field telescope.
Learn more about the benefits and features of this new optical system by going to the Edge HD web page.
CGEM M

For two years, Celestron will cover repairs or replacement of this product in cases of defective components or damage from normal wear and tear.

Celestron CGEM Telescope Features

  • 11" EdgeHD Optics
  • CGEM Computerized Equatorial Mount
  • Celestron's premium StarBright XLT coatings
  • 9x50 finderscope to help accurately find objects
  • Ultra sturdy 2" steel tripod with Accessory Tray
  • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
  • HD FeaturesNew 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 FeaturesProven NexStar computer control technology
  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • Redesigned electronics deliver constant regulated power to the motors making them capable of driving the telescope even when not perfectly balanced.
  • New "All-star" Polar alignment uses any bright star for a quick and accurate Polar alignment
  • Software Features include
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • Meridian preference for slewing - allows you to approach an object from the side of the Meridian that maximizes tracking (and imaging) time.
  • Solar System alignment method - allows you to align your telescope and view the moon and planets during the day
  • 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.
  • Custom database lists of all the most famous deep-sky objects by name and catalog number
  • Permanent Programmable Periodic Error Correction (PEC) - corrects for periodic tracking errors inherent to all worm drives
  • Drive Motors - Low Cog DC Servo motor with integrated optical encoders offer smooth, quiet operation and long life. The motor armatures are skewed to minimize cogging which is required for low speed tracking.
  • Internal Cable wiring for trouble-free setup and transportation
  • Designated six-pin RJ-12 modular jack, ST-4 compatible guide port
  • Autoguide port and Auxiliary ports located on the electronic plate for long exposure astrophotography
  • Double-line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
  • RS-232 communication port on hand 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
  • Precision machined 40 mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings.
  • Secure power plug ensures that the mount's power source is not accidentally disconnected

Key Features

  • Experience breathtaking celestial views with the impressive 11-inch aperture of this Schmidt-Cassegrain Telescope.
  • Effortlessly locate over 40,000 celestial objects using the intuitive CGEM Computerized Equatorial mount.
  • Capture stunning, high-resolution astrophotography thanks to the advanced EdgeHD optical design and Starbright XLT coatings.
  • Enjoy crisp, bright images of distant galaxies and nebulae with the powerful 2800mm focal length.
  • Achieve precise tracking for prolonged observation sessions with the reliable equatorial mount and various tracking rates.
  • Discover the wonders of the night sky with exceptional clarity and magnification, perfect for both beginners and experienced astronomers.

What's in the box:

  • 23mm 2" Axiom LX Eyepiece
  • 9x50mm Finderscope
  • 2" 90-Degree Mirror Diagonal
  • CGEM Computerized Equatorial Mount
  • Aluminum Tripod with Accessory Tray
  • Car Battery Adapter
  • 2 x 17 Lb Counterweights
  • NeNexRemote Telescope Control Software
  • 2-Year Warranty