CGEM II 925 EDGEHD TELESCOPE - SKU# 12018

by Celestron
Save 39%
$6,278.95
$3,799.00
  • 9.25” EdgeHD optics
  • CGEM II computerized equatorial mount
  • Celestron’s premium StarBright XLT coatings provide maximum light transmission
  • A 9x50 finderscope, 2” mirror diagonal for more comfortable viewing, and wide-angle 23 mm Luminos 2" eyepiece are all included

CGEM II 925 HD combines Celestron's newly redesigned CGEM II computerized equatorial mount with its acclaimed EdgeHD optical system.

OPTICAL TUBE INFO:

True Astrograph Quality
EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than competing coma-free designs. This guarantees you visibly sharp stars across some of the largest CCD chips available today.

Mechanical Features
In addition to EdgeHD’s optimized optical design, the telescope tube has been redesigned to make sure you get the most from your optics each and every night.

  • Mirror clutches - Flexible tension clutches hold the mirror in place and reduce image shift when taking long exposure astro-images.
  • Tube vents - Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror.
  • Fastar versatility - All EdgeHD optical tubes are Fastar-compatible, allowing the secondary mirror to be removed and replaced with a third party lens accessory for ultra-fast f/2 wide field imaging.

Individually Tested
Every EdgeHD that ships has been tested not only for the surface quality of each optical component, but also with a camera and artificial star to ensure the imaging system meets our rigid quality assurance.

 MOUNT INFO:

The CGEM II is capable of carrying Celestron’s higher-end SCT optical tubes (up to 11") securely and vibration free, which is ideal for both imaging and visual observing.

ERGONOMIC DESIGN

CGEM II was designed to be ergonomically friendly with large Altitude and Azimuth adjustment knobs for quick and easy polar alignment adjustment.


OPTICAL TUBE INFO:
Optical Design: EdgeHD
Aperture: 235mm (9.25")
Focal Length: 2350mm (93")
Focal Ratio: f/10
Focal Length of Eyepiece 1: 23mm (0.91")
Magnification of Eyepiece 1: 102x
Finderscope: 9x50
Star Diagonal: 2" with 1.25" adapter
Optical Tube: Aluminum
Highest Useful Magnification: 555x
Lowest Useful Magnification: 34x
Limiting Stellar Magnitude: 14.4
Resolution (Rayleigh): 0.59 arc seconds
Resolution (Dawes): 0.49 arc seconds
Light Gathering Power (Compared to human eye): 1127x
Secondary Mirror Obstruction: 85mm (3.35")
Secondary Mirror Obstruction by Diameter: 36%
Secondary Mirror Obstruction by Area: 13%
Optical Coatings: StarBright XLT
Optical Tube Length: 559mm (22")
Optical Tube Diameter: 271.8mm (10.7")
Optical Tube Weight: 21 lbs (9.53 kg)
Dovetail: CGE Dovetail Bar
MOUNT INFO:
Mount Type: Computerized Equatorial
Instrument load capacity: 40 lbs (18 kg)
Height adjustment range (includes mount and tripod): 1346mm - 1651mm (53" – 65")
Tripod Leg Diameter: 50.8mm (2") Steel tripod with graduated markings on lower section
Latitude adjustment range: 15° - 70°
Mount Head Weight: 40 lbs (18.14 kg)
Accessory Tray: Yes
Tripod Weight: 20 lbs (9 kg)
Weight of Counterweights: 1 x 17 lbs | 1 x 11 lbs
Slew Speeds: 9 slew speeds - max speed 4.5°/second
Tracking Rates: Sidereal, Solar and Lunar
Tracking Modes: EQ North & EQ South
GPS: N/A
Dovetail Compatibility: Dual saddle plates (CG-5 and CGE saddle)
Number of Auxiliary ports: 2 Aux ports (1x Hand control port and 1x AUX Port for optional accessories)
Autoguide port: Yes
USB Port: Yes, input on Hand Control
Power Requirements: 12V DC, 3.2 amps
Motor Drive: DC servo motors
Alignment Procedures: 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align
Periodic Error Correction: Yes
Computerized Hand Control: 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 port for PC connection
NexStar+ Database: 40,000+ objects, 100 user defined programmable objects Enhanced information on over 200 objects
Software: Celestron's Starry Night Special Edition Software, SkyPortal App
Total Kit Weight: 99 lbs (45 kg)
Included Items: CGEM II Equatorial Head |Tripod | Accessory Tray | 1 x 17 lbs and 1 x 11 lbs counterweights | NexStar+ Hand Control | DC Power Cable (item#18769) | Hand Control Holster
Solar Warning
  • Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
  • Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
  • Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.

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