Explore celestial wonders with unparalleled clarity using the Celestron EdgeHD 800 OTA - CGE.

This telescope is a gem in Celestron's lineup, boasting advanced aplanatic, flat field Schmidt-Cassegrain optics. These optics are designed to deliver pinpoint stars across the entire field of view, matching the demands of today’s largest imaging sensors and widest eyepieces.

The EdgeHD 800 is housed in a sturdy aluminum optical tube, equipped with specially designed vents that feature a 50-mesh filter. This innovative design efficiently releases hot air from behind the primary mirror while preventing dust ingress. The mirror itself is secured with support knobs, significantly minimizing image shift during long exposure astrophotography.

Offering remarkable versatility, the EdgeHD 800 supports three focal ratios: the standard f/10, a broader f/7 with an optional focal reducer, and an ultra-fast f/2 for wide-field imaging when using a removable secondary mirror and compatible third-party accessories. The optical surfaces are treated with Celestron’s premium StarBright XLT coatings, ensuring maximum light transmission for breathtaking astronomical observations and photography.

Included with the telescope are a 9x50 finderscope, a 1.25” mirror diagonal for comfortable viewing, and a 40 mm Plössl 1.25” eyepiece, enhancing your stargazing experiences to high-definition levels.

The EdgeHD 800 stands out with its true astrograph-quality performance. Unlike many telescopes that claim to be astrographs but only offer sharp imaging on a curved focal plane, the EdgeHD optics provide a focal plane more than three times flatter than standard Schmidt-Cassegrain models, ensuring sharp stars even with flat chip sensors of digital cameras.

This telescope doesn't just excel in delivering flat fields; it also surpasses in edge performance, enhancing both the resolution and limiting magnitude over telescopes with similar apertures. The StarBright XLT coatings on every optical surface guarantee maximum light throughput over a wide spectrum, both visually and photographically.

Mechanically, the EdgeHD 800 includes:

Mirror Clutches: Flexible tension clutches hold the mirror firmly, reducing image shift during long exposure astrophotography while maintaining the centered image without exerting pressure on the mirror assembly.
Tube Vents: The rear cell cooling vents, equipped with 50-mesh filters, ensure hot air is expelled while keeping dust out.
Fastar Versatility: The telescope’s native f/10 focal ratio is perfect for capturing smaller deep-sky objects. With an additional reducer lens or a Barlow lens, you can adjust the field of view or imaging scale. The EdgeHD optical tubes are Fastar-compatible, enabling ultra-fast f/2 wide-field imaging by replacing the secondary mirror with suitable third-party accessories.

Every EdgeHD 800 OTA undergoes rigorous testing, including a final acceptance test with a camera and artificial star, to ensure that each unit meets Celestron's high standards for quality and performance. This process guarantees that the EdgeHD 800 will perform exceptionally in the field and deliver high-quality astroimages.

Specifications

OPTICAL TUBE INFO:
Optical Design:	EdgeHD
Aperture:	203.2mm (8")
Focal Length:	2032mm (80")
Focal Ratio:	f/10
Focal Length of Eyepiece 1:	40mm (1.57")
Magnification of Eyepiece 1:	51x
Finderscope:	9x50
Star Diagonal:	1.25" Star Diagonal
Optical Tube:	Aluminum
Highest Useful Magnification:	480x
Lowest Useful Magnification:	29x
Limiting Stellar Magnitude:	14
Resolution (Rayleigh):	0.69 arc seconds
Resolution (Dawes):	0.57 arc seconds
Light Gathering Power (Compared to human eye):	843x
Secondary Mirror Obstruction:	64mm (2.5")
Secondary Mirror Obstruction by Diameter:	31%
Secondary Mirror Obstruction by Area:	9.77%
Optical Coatings:	StarBright XLT
Optical Tube Length:	432mm (17")
Optical Tube Diameter:	238mm (9.37")
Optical Tube Weight:	14 lbs (6.35 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	View Proposition 65 Warning

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Celestron EdgeHD 800 OTA - CGE

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