Celestron CGEM 800, 8" Schmidt-Cassegrain Telescope

SKU: CNCGEM800

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Reviews about this item

Review Summary

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

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Celestron CGEM 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

  • Mount Type

    Computerized Equatorial

  • Tripod

    Adjustable, Stainless Steel

  • Power Requirements

    Car battery adapter

  • 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

  • Apparent Field of View

    0.62 Degree

  • Secondary Mirror Obstruction

    2.7 in (69 mm)

  • Secondary Mirror Obstruction by Diameter

    34%

  • Secondary Mirror Obstruction by Area

    11%

  • Optical Coatings

    Starbright XLT Coating

  • Optical Tube Length

    17 in (432 mm)

  • Total Telescope Kit Weight

    88 lbs (40 kg)

  • Weight of Counterweights

    1 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

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

  • All Accessories (14)
  • Batteries & Power Supply (2)
  • Eyepieces & Accessories (3)
  • Imaging Adapters (1)
  • Telescope Accessories (1)
  • Suppresion Pads (1)
  • Cleaning Accessories (1)
  • Flashlights & Area Lights (1)
  • Filters (3)
  • Weights (1)

About Celestron CGEM Telescope

CGEM - 800 - General Features
• 8" Schmidt-Cassegrain telescope
• CGEM 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
• Celestron's premium StarBright XLT coatings
• 6x30 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

CGEM - 800 - Computerized Mount Features
• 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
• Proven NeXStar computer control technology
• New "All-star" Polar alignment uses any bright star for a quick and accurate Polar alignment
• Software Features include: Mount Calibration, Database Filter Limits, Hibernate, five Alignment Procedures
• 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
• 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
• Secure power plug ensures that the Mount's power source is not accidentally disconnected
• GPS compatible with optional CN16 GPS Accessory
• Precision machined 40mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings.

Celestron CGEM Telescope Features

  • Adorama Valuable Bundle. Kit Includes.
  • Celestron CGEM 800, 8" Schmidt-Cassegrain Telescope with Mount and Tripod.

Key Features

  • Adorama Valuable Bundle. Kit Includes
  • Celestron CGEM 800, 8" Schmidt-Cassegrain Telescope

What's in the box:

  • 25mm 1.25" Eyepiece
  • 6x30mm LER 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
  • Car Battery Adapter
  • NexStar Hand Controller
  • NeNexRemote Telescope Control Software
  • Counterweight Shaft
  • 17 lb Counterweight
  • Tripod
  • 2-Year USA Warranty