Celestron CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope

Celestron CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope

Celestron CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope

Celestron CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope

Celestron CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope

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Product Highlights

  • 11" Schmidt-Cassegrain OTA
  • 2800mm Focal Length, f/10 Focal Ratio
  • 1.25" 40mm Eyepiece and 90° Diagonal
  • CGEM II Motorized Equatorial Mount
  • NexStar+ Computer Controller
  • Database of 40,000+ Objects
  • Multiple Alignment Systems
  • Guided Tours and Custom Object Filters
  • Backlash Compensation and PPEC
  • 2" Adjustable Stainless Steel Tripod
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Price:  $3,499.00

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  • 1Description

Outfitted with a large aperture/long focal length optical tube assembly (OTA) and their updated computer-controlled motorized EQ mount, Celestron's CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope gives you a complete observational rig for making detailed observations of the Moon and planets within our solar system with the ability to reach into deep sky to discover galaxies, nebulae, clusters, and stars. Complementing the aperture and focal length is the proprietary StarBright XLT multi-coating system. With this system, light transmission is increased throughout the entire optical path with anti-reflection multi-coated lenses, highly reflective multi-coated mirrors, and Crown optical glass elements. While the focal ratio is a relatively slow f/10, the scope's precision tracking system allows it to be a competent astrophotography/astroimaging platform.

The CGEM II mount is engineered to carry up to a 40-pound payload and is outfitted with high-torque dual DC servo motors, it is able to smoothly and accurately slew and track heavier OTAs such as the one provided here. Its dual dovetail saddle allows it to accept the larger Losmandy-style plate used on the OTA, while also being able to accept other OTAs with the smaller Vixen-style plate. Celestron also improves its usage by adding compatibility with their SkySync GPS unit for a higher-level of precision during set up and alignment. To provide a stable platform for the mount and your OTA, a heavy-duty stainless steel tripod is included that sports large 2" legs and an accessory tray that doubles as a stabilizer.

The brain of the CGEM II is the NexStar+ computer controller. Equipped with a database of 40,000 objects, including the planets, stars, nebulae, galaxies, and the complete Messier catalog, it can also be programmed with up 100 custom user-defined objects and filters added for custom object lists. Its intuitive menu-driven user interface puts the power to observe the heavens with nine slew speeds and three tracking rates, plus anti-backlash compensation and Permanent Periodic Error Correction (PPEC) for smoother movements in the motors and improved tracking over time. Features such as guided tours, extended information on 200 popular objects, and multiple alignment options, make the NexStar+ controller easy to use and invaluable to new users and experienced star-gazers.

Optical Tube Assembly
  • Large 11" aperture
  • f/10 focal ratio
  • Long 2800mm focal length
  • Schmidt-Cassegrain optical path configuration
  • StarBright XLT Optical Coatings: Multi-layer aluminum/SiO2 (quartz)/TiO2 (titanium dioxide)/Si02 (silicon dioxide) mirror coatings with flat reflectivity across the light spectrum for both astrophotography/astroimaging and visual observation
  • Resolution: Rayleigh, 0.5 arcsec; Dawes, 0.42 arcsec
  • Secondary Mirror Obstruction: 3.75" (9.5cm), 34% by diameter, 12% by area
  • German equatorial mount
  • 40-pound payload capacity
  • 15-70° latitude adjustment range
  • Dual-axis low-cog DC servo motors with optical encoders for smooth tracking and quiet operation
  • High-torque motors provide smooth tracking and slewing for heavy OTAs
  • Autoguider port for making corrections while astroimaging
  • Dual Vixen/Losmandy dovetail saddle, compatible with CG-5 and CGE bars
  • Long clutch levers make tightening and loosening of clutches easier for manual movement
  • Internal cables/wires for snag-free operation
  • GPS-compatible with optional SkySync unit
  • Runs on included 12 VDC, 3.2A car/vehicle power supply
  • Includes 17lb counterweight with shaft
NexStar+ Hand Controller
  • Intuitive menu-driven user interface
  • Nine Slew Speeds: 2x, 4x, 8x, 16x, 32x, 0.3°/sec, 1.0°/sec, 2°/sec, 4°/sec
  • Multiple Tracking Rates: Sidereal, Lunar, and Solar
  • Anti-Backlash Correction: Train-out intrinsic play in gears for smoother movement and tracking
  • Permanent Periodic Error Correction (PPEC): Improves tracking precision for long-exposure astrophotography and imaging
  • 40,000-object database
  • 100 user-defined objects for customization
  • Filters for creating custom object lists
  • Solar System: All 7 planets plus the Moon, Sun and Pluto
  • Custom lists of all the brightest stars, double stars, variable stars and asterisms
  • Custom lists of all the best galaxies, nebulae and clusters as well as the complete Messier catalog and select NGC objects
  • Alignment Options: One or two-star, Solar system, Quick and Last
  • Sky Tour: Based on location, date, and time, the system shows the best objects in the sky and automatically slews to them
  • Object Info: Provides useful information about the selected object such as magnitude and constellation. Includes extended information about 200 popular objects
    Physical characteristics:
  • 2-line, 18-character LCD window with red backlighting for comfortable viewing without affecting night-adjusted vision
  • 19 function keys, backlit in red
  • Micro-USB Port: Connect to a computer, for use with software programs for point-and-click slewing capability and updating firmware via PC
Included Accessories
  • 1.25" 40mm eyepiece yields 70x power
  • 1.25" 90° star diagonal puts eyepiece in comfortable position when OTA is pointed at or near the zenith
  • 9x50 finderscope with bracket
  • Stainless steel legs
  • Heavy-duty 2" diameter
  • Graduated markings on lower section for height repeatability
  • Accessory/eyepiece holder tray that doubles as leg spreader/lock
  • Weight: 20 pounds
UPC: 050234120128
In the Box
Celestron CGEM II 1100 11" f/10 Schmidt-Cassegrain Telescope
  • CGEM II GoTo EQ Mount with Tripod
  • 17 lb Counterweight for the CGEM EQ Mount
  • 1.25" 40mm Eyepiece
  • 1.25" 90° Star Diagonal
  • 9x50 Finderscope with Bracket
  • Limited Two-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Schmidt-Cassegrain
    Aperture 11.0" / 27.9 cm
    Focal Length 2800 mm
    Focal Ratio f/10
    Eyepiece Barrel Diameter 1.25"
    Diagonal 90° star
    Finderscope 9 x 50
    Mount Type Motorized German equatorial
    GoTo System NexStar+ computer hand controller
    Tripod Stainless steel, adjustable height
    Counterweight 17.0 lb / 7.7 kg
    Power Source 12 VDC
    Optical Tube Dimensions 24.0" / 61.0 cm
    Weight Optical tube: 27.5 lb / 12.5 kg
    Mount head: 40.0 lb / 18.1 kg
    Tripod: 20.0 lb / 9.1 kg

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