Celestron Advanced C9.25 S-GT XLT with free DVD: £1449.00

9.25" SCT tube with a heavy duty CG-5 computerized mount

The C9 1/4-SGT telescope combines the unequaled optical excellence of a Celestron 9 1/4" Schmidt-Cassegrain telescope with our computerized CG-5 German equatorial mount for the ultimate economical astrophotography system.

The 9 1/4" was specifically designed for visual infinity focus when using 2" eyepieces and has an optimized baffle system to benefit astrophotography by minimizing vignetting at the edge of the field of view. Its longer primary focal length and lower magnification secondary mirror contribute to a flatter field of view at the focal plane and helps to further reduce optical aberrations.

This C9 1/4 optical system comes with our premium StarBright® XLT coatings. The optimized baffling system benefits astrophotography and gives high contrast views of the planets. With 33% more light gathering than the 8" model, the C9 1/4-S is compatible with the complete line of Celestron photographic and visual accessories.

Mounted on the Advanced GT Series computerized mount, this telescope has some high performance software and hardware features. Operated by our proven NexStar® computer control technology the telescope has a 40,000+ object database with 400 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 star; solar systems; objects and asterisms.

Using the RS-232 communication port on the hand control, you can control the telescope via a personal computer and our 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.

CG-5 Mount - Precision engineered for stability.

Our new 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.

General Details:
9.25 Schmidt-Cassegrain telescope
Starbright XLT high transmission coatings
6x30 finderscope to help accurately find objects
Heavy Duty (CG-5GT) computerized German equatorial mount
Ultra sturdy 2" diameter steel tripod with accessory tray
Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
Includes CD-ROM "The Sky" Astronomy Software which provides education about the sky and printable sky maps
Proven NexStar computer control technology 40,000 object database with 400 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 star; solar systems; objects and asterisms
DC Servo motors with encoders on both axes Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
Autoguider port for long exposure astrophotography
Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
Compatible with optional NexRemote telescope control software, for advanced control of your telescope via computer
RS-232 communication port on hand control to control the telescope via a personal computer GPS-compatible with optional CN16 GPS Accessory (93966)

TECHNICAL SPECIFICATIONS:

OPTICAL DESIGN: Schmidt-Cassegrain
APERTURE: 235 mm (9.25 in)
FOCAL LENGTH: 2350 mm (92.52 in)
FOCAL RATIO: 10
FINDERSCOPE: 6x30
MOUNT: CG-5 Equatorial
EYEPIECE 1: 25 mm (0.98 in)
MAGNIFICATION 1: 94 x
STAR DIAGONAL: 1.25
ACCESSORY TRAY: Yes
TRIPOD: 2 inch Stainless Steel
CD ROM: The Sky Level 1
POWER SUPPLY: Car Battery Adapter
HIGHEST USEFUL MAGNIFICATION: 555 x
LOWEST USEFUL MAGNIFICATION: 34 x
LIMITING STELLAR MAGNITUDE: 14.4
RESOLUTION: 0.59 arc seconds
RESOLVING POWER: 0.49 arc seconds
PHOTOGRAPHIC RESOLUTION: 200 line/mm
LIGHT GATHERING POWER: 1127 x
ANGULAR FIELD OF VIEW: 0.55 °
LINEAR FIELD OF VIEW (@1000 YDS): 29 ft (8.84 m)
OPTICAL COATINGS: Starbright Coating/XLT
SECONDARY MIRROR OBSTRUCTION: 3.35 in (85.09 mm)
SECONDARY MIRROR OBSTRUCTION BY AREA: 13 %
SECONDARY MIRROR OBSTRUCTION BY DIAMETER: 36.2 %
OPTICAL TUBE LENGTH: 22 in (558.8 mm)
TELESCOPE WEIGHT: 73 lb (33.11 kg)
COUNTERWEIGHTS: 2-11lb
MOTOR DRIVE: DC Servo motors with encoders, both axes
COMPUTER HAND CONTROL: Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
SLEW SPEEDS: 3°/sec
TRACKING RATES: Sidereal, Solar and Lunar
TRACKING MODES: EQ North & EQ South
ALIGNMENT PROCEDURES: AutoAlign, 2-Star Alignment, Quick Align
SOFTWARE PRECISION: 24bit, 0.08 arcsec calculation
COMMUNICATION PORTS: RS-232 communication port on hand control
MOTOR PORTS: Aux Port, Autoguide Ports
DATABASE: 40,000+ objects, 400 user defined programmable objects. Enhanced information on over 200 objects

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