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About the Celestron C11-SGT Advanced Computer Telescope - 11" SCT w/GoTo Mount...Celestron'''s C11 has been a best-selling optical system for decades. Combining a repuation for optical excellence with lightweight portability and great value, the C11 is the perfect choice if you''re looking for an advanced first telescope or want to upgrade to a larger aperture telescope. An adjustable counterweight makes it easy to point, balance and use. This Celestron C11 SGT optical system comes with premium StarBright XLT coatings and its large aperture offers light gathering power 843 times that of the human eye. Included are setting circles on both axes, slow-motion controls and latitude scale. An optional polar alignment scope for quick alignment is available. Mounted on the Celestron Advanced GT Series Computerized Mount, this telescope has some high performance software and hardware features. Operated by proven NexStar computer control technology, the telescope has a 40,000+ object database with 100 user-definable objects and expanded information on over 200 objects. 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. Using the RS-232 communication port on the hand control, you can control the Celestron C11-SGT via a personal computer and the new flash upgradeable hand controls allow you to update your telescope'''s operating software via the Internet. An Autoguider port is also included for astrophotography. The new Celestron CG-5 German Equatorial Mount has precision worm gears on both axes for extremely smooth stability. The key element that makes this system the most stable in its class is the new heavy-duty tripod with larger and more substantial legs that offer excellent damping characteristics for more stable views. The CG-5 also has a convenient latitude scale for easier alignment and an optional polar finder scope for the ultimate in precision alignments. Celestron C11-SGT Advanced Computer Telescope - 11" SCT w/GoTo Mount Features...
Celestron C11-SGT Advanced Computer Telescope - 11" SCT w/GoTo Mount Specifications...Optical Design: Schmidt-Cassegrain Aperture (mm): 279 mm (11 in) Focal Length (mm): 2800 mm (110 in) Focal Ratio: f/10 Eyepiece 1 (mm): 40 mm (1.57 in) Magnification 1: 70 x Finderscope: 9x50 Star Diagonal: 1.25 Mount: CG-5 Equatorial Accessory Tray: Yes Tripod: 2 inch Stainless Steel Power Supply: Car Battery Adapter Highest Useful Magnification: 659 x Lowest Useful Magnification: 40 x Limiting Stellar Magnitude: 14.7 Resolution (Rayleigh): 0.5 arc seconds Resolution (Dawes): 0.42 arc seconds Photographic Resolution: 200 line/mm Light Gathering Power (Compared to human eye): 1589 x Angular Field of View (deg): 0.71 Linear Field of View (@1000 yds): 38 ft (12 m) Secondary Mirror Obstruction: 3.75 in (95 mm) Secondary Mirror Obstruction by Diameter: 34 % Secondary Mirror Obstruction by Area: 12 % Optical Coatings: Starbright Coating/XLT Optical Tube Length: 24 in (610 mm) Telescope Weight: 91 lbs (41 kg) Counterweights: 3-11 lbs Motor Drive: DC Servo motors with encoders, both axes Slew Speeds: 3o/sec Tracking Rates: Sidereal, Solar and Lunar Tracking Modes: EQ North and EQ South Alignment Procedures: AutoAlign, 2-Star Alignment, Quick Align Software Precision: 24 bit, 0.08 arcsec calculation Motor Ports: Aux Port, Autoguide Ports Communication Ports: RS-232 communication port on hand control 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 Celestron Product Number: 11067-XLT
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