8" Edge HD Optical Tube Assembly (CGE)
$1,699.00
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8" Edge HD Optical Tube Assembly (CGE)
$1,699.00
Flat Field Optics
Astrograph Quality Pinpoint Stars
StarBright XLT Coatings
Maximum Optical Light Transmission
Tension Mirror Clutches
Locks Mirror Reduces Shift
Fastar System Versatility
Ultra Fast Wide Field
Integrated Tube Vents
Mesh Filter Releases Heat
Aluminum Optical Tube
Lightweight Durable Compact Design
Precision Astroimaging OpticsAstrograph Quality Pinpoint Star Fields
The Celestron 8" EdgeHD Optical Tube Assembly (OTA) delivers flat-field, coma-free optical performance ideal for both visual observing and high-resolution astrophotography. Featuring an advanced aplanatic Schmidt-Cassegrain design and premium StarBright XLT optical coatings, this high-performance telescope provides edge-to-edge sharpness across large sensor CCD cameras.
Unmatched Deep Sky ClarityEngineered For Photography And Observing
Engineered to meet the demands of modern astroimagers, the Celestron 8" EdgeHD Optical Tube Assembly (OTA) produces a focal plane more than three times flatter than standard optical designs. Flexible tension mirror clutches hold the primary mirror firmly in place to eliminate image shift during long exposure astrophotography, while integrated tube vents with 50-mesh filters release trapped hot air quickly. Combined with full Fastar versatility for rapid f/2 imaging configurations, this light-gathering optical tube assembly delivers stellar clarity and versatility for deep sky exploration.
Technical SpecificationsComplete Telescope Mechanical Specifications
Optical Design
EdgeHD Aplanatic Schmidt-Cassegrain
Aperture
203.2mm / 8 in
Focal Length
2032mm / 80 in
Focal Ratio
f/10
Optical Coatings
StarBright XLT
Optical Tube Material
Aluminum
Optical Tube Length
432mm / 17 in
Optical Tube Diameter
238mm / 9.37 in
Optical Tube Weight
14 lbs / 6.35 kg
Dovetail
CGE Dovetail Bar
Finderscope
9x50
Star Diagonal
1.25" Star Diagonal
Included Eyepiece
40mm Plössl 1.25" (51x) (eye)
Highest Useful Magnification
480x
Lowest Useful Magnification
29x (minus)
Limiting Stellar Magnitude
14
Light Gathering Power
843x compared to human eye
Secondary Mirror Obstruction
64mm / 2.5 in
Advanced Mechanical FeaturesOptimized Design For Deep Sky Performance
Aplanatic OpticsDelivers flat-field coma-free images across large imaging sensors
StarBright XLTPremium optical coatings yield up to 97.4% light transmission
Mirror ClutchesFlexible tension rods lock the mirror to prevent image drift
Tube VentsIntegrated 50-mesh air filters allow cooling without dust entry
Fastar VersatilityRemovable secondary mirror allows ultra-fast f/2 wide-field setup
Included AccessoriesPackage includes 9x50 finderscope, diagonal, and 40mm eyepiece
Frequently Asked QuestionsEverything you need to know
What mount is compatible with the Celestron 8" EdgeHD Optical Tube Assembly (OTA)?
The Celestron 8" EdgeHD Optical Tube Assembly (OTA) includes a wide CGE dovetail rail (Losmandy style). It requires an equatorial mount or heavy-duty alt-azimuth mount that supports CGE dovetail plates and can handle at least 14 lbs of payload.
Is the Celestron 8" EdgeHD Optical Tube Assembly (OTA) suitable for astrophotography?
Yes, the Celestron 8" EdgeHD Optical Tube Assembly (OTA) is specifically designed as an astrograph-quality telescope that produces a flat, coma-free focal plane ideal for large camera sensors.
Does the Celestron 8" EdgeHD Optical Tube Assembly (OTA) support Fastar f/2 imaging?
Yes, the Celestron 8" EdgeHD Optical Tube Assembly (OTA) features Fastar technology, allowing you to remove the secondary mirror and attach a third-party lens system for ultra-fast f/2 wide-field imaging.
What accessories come included with the Celestron 8" EdgeHD Optical Tube Assembly (OTA)?
The Celestron 8" EdgeHD Optical Tube Assembly (OTA) comes standard with a 9x50 finderscope, a 1.25" star diagonal, a 40mm Plössl 1.25" eyepiece, and a built-in CGE mounting rail.