Delve into the depths of the cosmos with the Celestron EdgeHD 925 OTA - CGE

A masterpiece in Celestron's renowned telescope lineup. This telescope features advanced aplanatic, flat field Schmidt-Cassegrain optics, meticulously engineered to deliver razor-sharp stars across the entire field of view, complementing even the largest imaging sensors and the widest eyepieces available today.

The robust aluminum optical tube of the EdgeHD 925 is equipped with innovative tube vents, complete with an integrated 50-mesh filter. This design ensures efficient heat dissipation from behind the primary mirror while preventing dust from entering. Additionally, the telescope includes mirror support knobs that effectively reduce image shift during extended imaging sessions.

This telescope is designed for versatility, offering two focal ratios: the standard f/10 and an ultra-fast f/2 for wide-field imaging, achievable with a removable secondary mirror and compatible third-party accessories. The optical surfaces are coated with Celestron’s superior StarBright XLT coatings, ensuring maximum light transmission for unparalleled visual and photographic experiences.

Included with the EdgeHD 925 are a 9x50 finderscope, a 2” mirror diagonal for comfortable viewing, and a wide-angle 23mm Luminos 2" eyepiece, all contributing to an HD viewing experience.

The EdgeHD 925 stands apart with its true astrograph-quality performance. Unlike many telescopes labeled as "astrographs" that only provide sharp stars on a curved focal plane, the EdgeHD optics deliver a focal plane more than three times flatter than standard Schmidt-Cassegrain models and significantly flatter than other coma-free designs. This results in sharply focused stars across some of the largest CCD chips available today.

The EdgeHD optics don't just impress with their flat field performance; they also enhance both the resolution and limiting magnitude, outperforming telescopes of similar aperture. Thanks to the StarBright XLT coatings on every optical surface, the EdgeHD 925 offers exceptional light throughput across a wide range of visual and photographic spectrums.

Mechanically, the EdgeHD 925 includes:

Mirror Clutches: The innovative flexible tension clutches securely hold the mirror in place, reducing image shift during long-exposure astrophotography, while maintaining image centering without exerting pressure on the mirror assembly.
Tube Vents: The cooling vents on the rear cell, equipped with 50-mesh filters, effectively expel warm air while keeping dust out.
Fastar Versatility: The telescope’s native f/10 focal ratio is perfect for capturing small deep-sky objects. The Fastar-compatible design allows for ultra-fast f/2 wide-field imaging by replacing the secondary mirror with suitable third-party accessories.

Each EdgeHD 925 OTA undergoes extensive testing, including a final acceptance test with a camera and artificial star, to ensure that each unit meets Celestron's stringent quality standards. This process guarantees that the EdgeHD 925 will perform exceptionally in the field, producing high-quality astroimages.

Specifications

OPTICAL TUBE INFO:
Optical Design:	EdgeHD
Aperture:	234.95mm (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:	271.78mm (10.7")
Optical Tube Weight:	21 lbs (9.53 kg)
Dovetail:	CGE Dovetail Bar
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.
California Residents	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Celestron EdgeHD 925 OTA - CGE

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