CELESTRON OPTIQUE 9.25" A XLT
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CELESTRON C9.25 OTA (CGE DOVETAIL)
235 mm Schmidt-Cassegrain optical tube with StarBright XLT coatings and Fastar compatibility. Lightweight, compact, and highly versatile.
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CELESTRON C9.25 OTA (CGE DOVETAIL)
DESCRIPTION
The Celestron C9.25 OTA is a compact yet powerful optical tube featuring a 235 mm aperture and 2350 mm focal length at f/10. Its Schmidt-Cassegrain design includes StarBright XLT coatings, enhancing light transmission and contrast for both planetary and deep sky observation.
The tube is Fastar-compatible, allowing you to remove the secondary mirror and mount a camera at f/2 focus (with an optional lens assembly). This enables extremely short exposures for deep-sky imaging.
Constructed from aluminum, it measures just 559 mm and weighs about 9 kg, making it highly portable. Supplied with a CGE dovetail bar, 6x30 finderscope, 25 mm eyepiece, 1.25" diagonal, and visual back.
INCLUDED ACCESSORIES
25 mm eyepiece (94x magnification)
6x30 optical finderscope
1.25" star diagonal
1.25" visual back
CGE-style dovetail bar
TECHNICAL SPECIFICATIONS
• Optical design: Schmidt-Cassegrain
• Aperture: 235 mm
• Focal length: 2350 mm
• Focal ratio: f/10
• Magnification with supplied eyepiece: 94x
• Finderscope: 6x30
• Star diagonal: 1.25"
• Resolution (Rayleigh): 0.59"
• Resolution (Dawes): 0.49"
• Limiting magnitude: 14.4
• Secondary mirror obstruction: 85 mm
• Obstruction by diameter: 36%
• Obstruction by area: 13%
• Light gathering power: 1127x (vs. human eye)
• Optical coatings: StarBright XLT
• Tube length: 559 mm
• Tube diameter: 271.8 mm
• Tube weight: 9.07 kg (20 lbs)
• Dovetail: CGE-style bar
• Fastar compatible: Yes