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Celestron CGEM II 800, 8" Schmidt-Cassegrain Telescope

SKU: CNCGEM2800 MFR: 12010
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Key Features

  • Explore deep space with the Celestron CGEM II 800 telescope's impressive 8-inch aperture.
  • Achieve stunning clarity with StarBright XLT coatings, enhancing light gathering power.
  • Perfect for astrophotography, the sturdy CGEM mount ensures exceptional stability.
  • Effortlessly locate celestial objects using the computerized hand control with 40,000+ database.
  • Enjoy versatile viewing with multiple alignment procedures for quick telescope setup.
  • Transport and set up easily with the durable steel tripod, ideal for backyard astronomy.
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Reviews about this item

Review Summary

2021-07-01T08:57:29

Rated 5 out of 5

Very impressive telescope, good value, good service.

Adorama's service was excellent. They shipped it within a few days of ordering and it was received in good shape. The telescope is well designed and well made. I have been amazed at what this scope can do and I have been able to view and photograph deep sky nebulae and galaxies I have never been able to capture before. The tripod and equatorial mount are a bit heavy but very manageable when separately handled. It helps to have some basic knowledge of astronomy and telescopes to get the most out of this telescope as there is a learning curve. I would recommend this telescope for anyone who has a 'starter scope' and wishes to upgrade.

DONALD M.

2020-02-20T06:36:33

Rated 5 out of 5

Great Piece of Equipment

Well built piece of equipment. Looks exactly like in the picture. Upgrades available for the firmware (See Celestron website). The combined weight of this equipment is HEAVY!

Michael P.

2017-10-10T10:58:32

Rated 5 out of 5

great service

Your service is very very good.

AARON R.

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Celestron CGEM II Telescope Specifications

  • Optical Design

    Schmidt-Cassegrain

  • Aperture (mm)

    203.2 mm (8 in)

  • Focal Length

    2032 mm (80 in)

  • Focal Ratio

    10

  • Focal Length of Eyepiece 1 (mm)

    25 mm (0.98 in)

  • Magnification of Eyepiece 1

    81 x

  • Finderscope

    6x30

  • Star Diagonal

    1.25

  • Highest Useful Magnification

    480 x

  • Lowest Useful Magnification

    29 x

  • Limiting Stellar Magnitude

    14

  • Resolution (Rayleigh)

    0.69 arc seconds

  • Resolution (Dawes)

    0.57 arc seconds

  • Light Gathering Power

    843 x

  • Secondary Mirror Obstruction

    2.5 in (64 mm)

  • Secondary Mirror Obstruction by Diameter

    31%

  • Secondary Mirror Obstruction by Area

    9.77%

  • Optical Coatings

    Starbright XLT Coating

  • Optical Tube Length

    17 in (432 mm)

  • Optical Tube Weight

    12.5 lbs (5.67 kg)

  • Dovetail Compatibility

    CGE / CGX Mount

  • Mount Type

    Computerized Equatorial

  • Tripod

    2" Steel tripod with graduated markings on lower section

  • Dovetail Mount

    Directly connects to both CG-5 & CGE dovetail bars

  • Payload capacity

    40 lbs.

  • Latitude Adjustment Range

    15 to 70 Degree

  • Power Requirements

    12 VDC, 3.2 amps

  • Ports

    1x Hand control port, 1x Auxiliary Port, 1x Auto guider port, 1 USB 2.0 port (on hand control)

  • Motor Drive

    Low cog DC servo motors

  • Slew Speed

    9 Slew Speeds

  • Tracking Rates

    Sidereal, Solar and Lunar

  • Tracking Modes

    EQ North and EQ South

  • Alignment Procedures

    AutoAlign, 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align

  • Computerized Hand Control

    Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons, USB 2.0 port for PC c onnection

  • Database

    Database 40,000+ objects, 100 user defined programmable objects. En hanced information on over 200 objects

  • Mount Weight

    40 pounds

  • Tripod Weight

    20 pounds

  • Weight of Counterweight

    17 Pounds

  • Total Weight of Mount Kit

    77 Pounds

  • UPC Code

    050234120104

4 Accessories for Celestron CGEM II 800, 8" Schmidt-Cassegrain Telescope

  • All Accessories (4)
  • Batteries & Power Supply (3)
  • Power Supplies (1)

About Celestron CGEM II Telescope

FEATURED REVIEWS

Very impressive telescope, good value, good service.

By DONALD M.

Adorama's service was excellent. They shipped it within a few days of ordering and it was received in good shape. The telescope is well designed and well made. I have been amazed at what this scope can do and I have been able to view and photograph deep sky nebulae and galaxies I have never been able to capture before. The tripod and equatorial mount are a bit heavy but very manageable when separately handled. It helps to have some basic knowledge of astronomy and telescopes to get the ...

View full Review

Great Piece of Equipment

By Michael P.

Well built piece of equipment. Looks exactly like in the picture. Upgrades available for the firmware (See Celestron website). The combined weight of this equipment is HEAVY!

Be captivated by the celestial wonders with the high-quality CGEM II 800, 8" Schmidt-Cassegrain Telescope from Celestron. This advanced telescope is equipped with Celestron's premium StarBright XLT coated optics, providing you with over 800 times the light gathering power than the unaided eye. The large 8-inch aperture allows for brighter, clearer images of celestial objects, making it a powerful tool for both amateur and professional astronomers.

The CGEM II 800 is not just powerful, but also innovative. It features a redesigned CGEM II computerized equatorial mount, which is lightweight, portable, and capable of carrying Celestron's higher-end SCT optical tubes securely and vibration-free. This makes it an ideal platform for long exposure photography with optional CCD cameras or photographic equipment.

The CGEM II 800 is designed with ergonomics in mind. It features large Altitude and Azimuth adjustment knobs for quick and easy polar alignment adjustment. The internal RA and DEC motor wiring provides a clean look and an easy and trouble-free set up.

One of the standout features of the CGEM II series is Celestron's innovative All-Star polar alignment procedure. This feature allows users to choose any bright star, while the software calculates and assists with polar alignment. Additionally, the Permanent Periodic Error Correction (PEC) allows users to train out the worm gears periodic errors, while the mount retains the PEC recordings.

The CGEM II 800 offers seamless tracking for objects near the Meridian, allowing for uninterrupted imaging through the most ideal part of the sky. With a robust database of over 40,000 objects, 100 user-defined programmable objects, and enhanced information on over 200 objects, you'll have the universe at your fingertips.

The CGEM II 800 also features a USB 2.0 port on the hand control for direct links to a PC via ASCOM supported software, internal cabling throughout for worry-free remote operation, and low cog DC Servo motor with integrated optical encoders for smooth, quiet operation.

Experience the perfect blend of portability and precision with the CGEM II 800, 8" Schmidt-Cassegrain Telescope, a testament to Celestron's commitment to delivering durable, advanced, and high-quality astronomical equipment.

Celestron CGEM II Telescope Features

  • 8" Schmidt-Cassegrain optical tube assembly
  • Celestron's premium StarBright XLT coatings
  • 2032 mm focal length (f/10)
  • 6x30 finderscope to help accurately center alignment objects
  • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
  • Includes large CGE style dovetail mounting bar

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Product Documents

User Manual

Key Features

  • Explore deep space with the Celestron CGEM II 800 telescope's impressive 8-inch aperture.
  • Achieve stunning clarity with StarBright XLT coatings, enhancing light gathering power.
  • Perfect for astrophotography, the sturdy CGEM mount ensures exceptional stability.
  • Effortlessly locate celestial objects using the computerized hand control with 40,000+ database.
  • Enjoy versatile viewing with multiple alignment procedures for quick telescope setup.
  • Transport and set up easily with the durable steel tripod, ideal for backyard astronomy.

What's in the box:

  • 25mm 1.25" Eyepiece
  • 6x30mm Finderscope
  • Finderscope Bracket
  • Visual Back (1.25")
  • 1.25" 90-Degree Mirror Diagonal
  • Dovetail Slide Bar
  • Lens Caps
  • CGEM Motorized Equatorial Telescope Mount with Tripod
  • NexStar Hand Controller
  • Counterweight Shaft
  • 17 lb Counterweight
  • Tripod
  • 2-Year USA Warranty