Celestron CGEM 925 SCT XLT

The CGE-925 Schmidt-Cassegrain Telescope is part of Celestron’s “Top-of-the-Line” German Equatorial mounted astronomical telescopes. The larger CGE-925 is still portable enough to take with you, yet it offers a 33% increase in light gathering power over 8" telescopes. This telescope is especially at home as a solid platform for long exposure photography with optional CCD cameras or photographic equipment. Using an f/6.3 Focal Reducer makes it usable with a wide variety of CCD cameras. German Equatorial mounts are recognized as being the superior choice for astrophotography because of their rock solid stability, simple balancing and easy accessibility for attaching equipment. This, coupled with the CGE line’s GoTo capability, makes it unbeatable. As a visual instrument you can search for all of the Messier Catalogue objects, and you can see hundreds of other, less famous, but equally interesting NGC, IC and Caldwell objects. Turn this scope to the planets and see amazing detail on the surface of Jupiter; see Cassini’s Division in the rings of Saturn, and resolve details on the surface of Mars. Even the distant Uranus, Neptune and Pluto are within your reach.

FOR MORE GENERAL CGE INFORMATION PLEASE SEE THE CGE 800 PAGE

Clearance – CGE mounts support their tubes at a single contact point allowing the tube to move freely around its polar axis without making contact with the telescope’s mount. This is particularly useful when adding photographic and CCD instruments that extend from the rear of the telescopes.

All CGE mounted telescopes are compatible with Celestron’s CN-16 GPS accessory. Combine the GPS and built-in Hibernate mode and these telescopes will keep track and remember their exact location and time without having to enter the information into the hand control.

Other CGE Capabilities Include:

Mechanical Features

*Carbon Fibre Tube - Strong and lightweight with 1/4 the thermal expansion of an aluminium tube on the 8" and 11" models. Scratch and dent resistant.
*CNC machined aluminium and stainless steel components
*Auto guide port, PC port and auxiliary ports located on the electronic pier.
*Strain relief power cord cable protection
*Backlit power switch
*Drive Motors - Made in the U.S.A., Pittman® LO-COGT brush-commutated DC motors offer smooth, quiet operation and long life. The motor armatures are skewed to minimize cogging which is required for low speed tracking. Windings are resin impregnated for greater reliability in incremental motion applications.
*Precision Bronze Worm Gear - 32 pitch, 5.625" pitch diameter, 180 tooth bronze gear manufactured in the U.S.A. by W. M. Berg, Inc. Manufactured to AGMA Quality Class 10 standard, which minimizes total composite error and backlash.
*Bearing and Shaft - Stainless steel worm shaft has 0.4375 pitch diameter and is preloaded with two ball bearings. The worm is made from a single piece of steel (rather than a two-piece worm-and-shaft assembly) to minimize run-out, which is a source of periodic error.
*No-slip clutch system for pointing precision
*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.
*Latitude range: 10º to 60º northern or southern hemispheres
*Maximum payload: 65 lb.

RA and Dec Axis

*1" solid ground stainless steel shaft
*Two preloaded 0.9835" I.D. x 2.047" O.D. tapered roller bearings
*One 3.543" I.D. x 4.724" O.D. thrust bearing (RA Axis)
*180 tooth, 5.625 pitch diameter enveloping bronze gear preloaded to maintain gear mesh when clutch tension varies, manufactured to AGMA 10 quality by W.M. Berg
*0.4375" diameter precision 303 stainless steel worm manufactured to AGMA 10 quality
*No-slip clutch system pre-loading a 4.65" stainless steel disk for no-slip drive and pointing precision
*One 2.500" I.D. x 3.250" O.D. thrust bearing (Dec Axis)

Tripod

*Adjustable height: 36" to 50"
*Leg material: cold rolled carbon steel
*Upper leg diameter: 2.75"; lower leg diameter: 2.375"

Electronic and Software Features

*GoTo system is precision accurate to 1.5 arc minutes
*40,000+ object database with 400 user-defined objects. Features include: Compass Calibration, Polar Alignment routine, Database Filter Limits, Hibernate, Auto North and Level, Quick Align, and user-defined slew limits.
*Hibernate - maintains alignment even while powered down.
*Polar alignment routines for Northern and Southern hemispheres.
*Filter limits - displays only objects above the horizon.
*Permanent programmable periodic error correction (PEC) - corrects for periodic tracking errors inherent to all worm drives.
*Smooth ramping of slew motors to reduce wear on the drive train.
*Home sensors on R.A. and Dec axes.
*Fail-safe slew limit switches in R.A.
*Real-time clock - maintains time even when powered down.
*12VDC Servo Motors with integrated optical encoders with 0.11 arc second resolution.

CGE 925

The CGE-925 Schmidt-Cassegrain Telescope is part of Celestron’s “Top-of-the-Line” German Equatorial mounted astronomical telescopes. The CGE-800 is the most portable of the four models. This telescope is especially at home as a solid platform for long exposure photography with optional CCD cameras or photographic equipment. Using an f/6.3 Focal Reducer or Fastar accessory makes it usable with a wide variety of CCD cameras. German Equatorial mounts are recognized as being the superior choice for astrophotography because of their rock solid stability, simple balancing and easy
accessibility for attaching equipment. This, coupled with the CGE line’s GoTo capability, makes it an unbeatable instrument for its size. As a visual instrument you can search for all of the Messier Catalogue objects, and you can see hundreds of other, less famous, but equally interesting NGC, IC and Caldwell objects. Turn this scope to the planets and see amazing detail on the surface of Jupiter; see Cassini’s Division in the rings of Saturn, and resolve details on the surface of Mars. Even the distant Uranus, Neptune and Pluto are within your reach.

Included Accessories

Specification

1-1/4" - 25mm Plössl Eyepiece (94x)
1-1/4" Star Diagonal
6x30 Finder scope and Mounting Bracket
1-1/4" Visual Back
Car Battery Adapter
NexRemote Telescope Control Software

FREE 8 X 56 BINOCULARS!

9.25" (235mm) Schmidt-Cassegrain Optical Design
2350mm Focal Length, f/10
Computerized Equatorial Mount
Super HD Tripod
Double line, 16 character Liquid Crystal Display; 19 fibre optic backlit Computerized Hand Control
RS-232 communication port on hand control
Optical Tube Weight - 20 lb.
Tripod/Mount Weight - 114 lb.
Electronic and Software Features

GPS Compatible with optional CN 16 GPS Accessory(#93967)
GoTo system is precision accurate to 1.5 arc minutes
40,000+ object database with 400 user-defined objects. Features include: Compass Calibration, Polar Alignment routine, Database Filter Limits, Hibernate, Auto North and Level, Quick Align, and user-defined slew limits.
Hibernate - maintains alignment even while powered down.
Polar alignment routines for Northern and Southern hemispheres.
Filter limits - displays only objects above the horizon.
Permanent programmable periodic error correction (PEC) - corrects for periodic tracking errors inherent to all worm drives.
Smooth ramping of slew motors to reduce wear on the drive train.
Home sensors on R.A. and Dec axes.
Fail-safe slew limit switches in R.A.
Real-time clock - maintains time even when powered down.
12VDC Servo Motors with integrated optical encoders with 0.11 arc second resolution.

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