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Celestron CGEM II 925 EdgeHD 9.25" Schmidt-Cassegrain Telescope

SKU: CNCGEM2925H MFR: 12018
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Key Features

  • Explore deep-sky wonders with the Celestron EdgeHD telescope, featuring a large 9.25" aperture.
  • Capture crisp, clear images using EdgeHD optics, minimizing field curvature for stunning views.
  • Enjoy stable tracking with the CGEM II equatorial mount, perfect for astrophotography sessions.
  • Achieve up to 555x magnification, revealing intricate details on planets and distant nebulae.
  • Utilize the computerized hand control for easy object location from a database of 40,000+.
  • Benefit from StarBright XLT coatings, maximizing light transmission for brighter, clearer images.
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Questions & Answers

Shopper : where is this made?
BRUCE H : does the 9.25 " scope come just as shown in the picture with 2 counter weights?
Shopper : Why Did You Choose This?STANFORD H : The aperture I was looking for and a nicer mount than the Advanced VXRich S : fantastic price for the quality, great reviews everywhere, good for photoastronomyMATTHEW M : Suggested accessory for use with the Celestron Telescope.

Reviews about this item

Review Summary

2021-07-01T08:57:29

Rated 5 out of 5

Very impressive telescope, good value, good service.

Adorama's service was excellent. They shipped it within a few days of ordering and it was received in good shape. The telescope is well designed and well made. I have been amazed at what this scope can do and I have been able to view and photograph deep sky nebulae and galaxies I have never been able to capture before. The tripod and equatorial mount are a bit heavy but very manageable when separately handled. It helps to have some basic knowledge of astronomy and telescopes to get the most out of this telescope as there is a learning curve. I would recommend this telescope for anyone who has a 'starter scope' and wishes to upgrade.

DONALD M.

2020-02-20T06:36:33

Rated 5 out of 5

Great Piece of Equipment

Well built piece of equipment. Looks exactly like in the picture. Upgrades available for the firmware (See Celestron website). The combined weight of this equipment is HEAVY!

Michael P.

2017-10-10T10:58:32

Rated 5 out of 5

great service

Your service is very very good.

AARON R.

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Celestron CGEM II Telescope Specifications

  • Optical Design

    EdgeHD

  • Aperture (mm)

    234.95 mm (9.25 in)

  • Focal Length

    2350 mm (93 in)

  • Focal Ratio

    10

  • Focal Length of Eyepiece 1 (mm)

    23 mm (0.91 in)

  • Magnification of Eyepiece 1

    102 x

  • Finderscope

    9x50

  • Star Diagonal

    2" w/ 1.25" adapter

  • Highest Useful Magnification

    555 x

  • Lowest Useful Magnification

    34 x

  • Limiting Stellar Magnitude

    14.4

  • Resolution (Rayleigh)

    0.59 arc seconds

  • Resolution (Dawes)

    0.49 arc seconds

  • Light Gathering Power

    1127 x

  • Secondary Mirror Obstruction

    3.35 in (85 mm)

  • Secondary Mirror Obstruction by Diameter

    36%

  • Secondary Mirror Obstruction by Area

    13%

  • Optical Coatings

    Starbright XLT Coating

  • Optical Tube Length

    22 in (559 mm)

  • Optical Tube Weight

    20 lbs (9.07 kg)

  • Dovetail Compatibility

    CGE / CGX Mount

  • Mount Type

    German Equatorial Mount

  • Instrument load capacity

    55 lbs.

  • Tripod Height Adjustment Range

    47.25" to 77.5" including EQ headA

  • Tripod Leg Diameter

    2"

  • Latitude Adjustment Range

    3 degreee to 65 Degree

  • Tripod Weight

    19.2 lbs.

  • EQ Head Weight

    44 lbs.

  • Max Slew Speed

    5 Degree/second (4 Degree/second is default)

  • Tracking Rates

    Sidereal, Solar and Lun

  • Number of Auxiliary Ports

    2

  • Autoguide Port

    Yes

  • USB Port

    Yes

  • Software

    New telescope control PC software

  • UPC Code

    050234120180

6 Accessories for Celestron CGEM II 925 EdgeHD 9.25" Schmidt-Cassegrain Telescope

  • All Accessories (6)
  • Batteries & Power Supply (1)
  • Power Supplies (1)
  • Navigational Accessories (3)
  • Tripod Accessories (1)

About Celestron CGEM II Telescope

FEATURED REVIEWS

Very impressive telescope, good value, good service.

By DONALD M.

Adorama's service was excellent. They shipped it within a few days of ordering and it was received in good shape. The telescope is well designed and well made. I have been amazed at what this scope can do and I have been able to view and photograph deep sky nebulae and galaxies I have never been able to capture before. The tripod and equatorial mount are a bit heavy but very manageable when separately handled. It helps to have some basic knowledge of astronomy and telescopes to get the ...

View full Review

Great Piece of Equipment

By Michael P.

Well built piece of equipment. Looks exactly like in the picture. Upgrades available for the firmware (See Celestron website). The combined weight of this equipment is HEAVY!

Make your stargazing experience exceptional with the high-quality CGEM II 925 EdgeHD 9.25" Schmidt-Cassegrain Telescope. This advanced telescope combines Celestron's redesigned CGEM II computerized equatorial mount with the acclaimed EdgeHD optical system, offering a superior viewing experience for astronomy enthusiasts.

With a large aperture of over 9 inches, this durable telescope gathers over 1000 times more light than the naked eye, producing brighter and clearer images of celestial objects. The EdgeHD optical system is an innovative, aplanatic, flat field Schmidt-Cassegrain design that delivers aberration-free images across a wide visual and photographic field of view.

The telescope's optical system is designed to reduce more than just off-axis star coma; it also provides an astrograph-quality flat focal plane all the way to the edge of the field of view. This ensures sharp, detailed images across some of the largest CCD chips available today, making it a premier choice for astroimaging.

The CGEM II 925 EdgeHD is equipped with Celestron's StarBright XLT optical coatings on every surface, maximizing light throughput across the widest visual and photographic spectrum. This, combined with superior edge performance, not only creates rounder, more pleasing stars but also improves resolution and limiting magnitude when compared to telescopes of equal aperture.

The sturdy telescope tube has been redesigned with mirror clutches and tube vents to ensure optimal performance. The mirror clutches hold the mirror in place and reduce image shift during long exposure astro-images, while the tube vents allow hot air to be released from behind the primary mirror, preventing dust from entering.

The CGEM II 925 EdgeHD is also 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. This makes it one of the most versatile imaging telescopes available today.

The CGEM II mount is capable of carrying Celestron's higher-end SCT optical tubes securely and vibration-free, making it ideal for both imaging and visual observing. With a payload capacity of 40 lbs and slewing at 5½ per second, you can instantly point to any celestial object in the database.

The mount features Celestron's innovative All-Star Polar alignment procedure and Permanent Periodic Error Correction (PEC), enhancing the user experience for astroimagers. The CGEM II mount also has a robust database with over 40,000 objects, 100 user-defined programmable objects, and enhanced information on over 200 objects.

With its ergonomic design, innovative features, and high-quality optics, the CGEM II 925 EdgeHD 9.25" Schmidt-Cassegrain Telescope offers a superior stargazing experience, making it a top choice for astronomy enthusiasts and astroimagers alike.

Celestron CGEM II Telescope Features

  • 9.25" EdgeHD optics
  • CGEM II computerized equatorial mount
  • Celestron's premium StarBright XLT coatings
  • A 9x50 finderscope, 2" mirror diagonal for more comfortable viewing, and wide-angle 23 mm Luminos 2" eyepiece are all included
  • Includes large CGE style dovetail mounting bar
  • EdgeHD aplanatic, flat field SCT optics for pinpoint stars to the edge of the largest imaging sensors and widest eyepieces. Lightweight and portable
  • Aluminum optical tube with tube vents featuring an integrated 95-micron mesh filter allows hot air to be released from behind the primary mirror. Mirror support knobs hold the mirror in place and reduce image shift during imaging
  • Versatile design accommodates 3 focal ratios: native f/10, f/7 with the addition of a focal reducer, or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Product Documents

User Manual

Key Features

  • Explore deep-sky wonders with the Celestron EdgeHD telescope, featuring a large 9.25" aperture.
  • Capture crisp, clear images using EdgeHD optics, minimizing field curvature for stunning views.
  • Enjoy stable tracking with the CGEM II equatorial mount, perfect for astrophotography sessions.
  • Achieve up to 555x magnification, revealing intricate details on planets and distant nebulae.
  • Utilize the computerized hand control for easy object location from a database of 40,000+.
  • Benefit from StarBright XLT coatings, maximizing light transmission for brighter, clearer images.

What's in the box:

  • 40mm 1.25 " Plossl Eyepiece
  • 9x50mm Finderscope
  • Finderscope Bracket
  • 2 " 90-Degree Mirror Diagonal
  • Dovetail Slide Bar
  • Lens Caps
  • CGEM Motorized Equatorial Telescope Mount with Tripod
  • NexStar Hand Controller
  • Counterweight Shaft
  • 17 lb Counterweight
  • Tripod
  • 2-Year USA Warranty