Celestron C9.25 XLT Ota
Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes.
All optical surfaces are coated with Celestron’s high efficiency StarBright® multi-layered coating group. Available with either Vixen type, or Losmandy type dovetail bars.
GENERAL FEATURES:
- 9.25" Schmidt-Cassegrain Optical Tube Assembly
- Aluminum Optical Tube
- Celestron's premium StarBright XLT coatings
- 2350 mm focal length (f/11)
- 25 mm eyepiece included (94x)
- Visual back allows for use with 1.25" accessories
- 6x30 finderscope to help accurately find objects
- Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
- Includes dovetail rail compatible with Vixen type, or Losmandy type mount - choose above
SPECIFICATIONS:
Optical Design: Schmidt-Cassegrain
Aperture (mm): 234.95 mm (9.25 in)
Focal Length: 2350 mm (93 in)
Focal Ratio: 10
Focal Length of Eyepiece 1 (mm): 25 mm (0.98 in)
Magnification of Eyepiece 1: 94 x
Finderscope: 6x30
Star Diagonal: 1.25
Optical Tube: Aluminum
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 (Compared to human eye): 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
Optical Tube Length: 22 in (559 mm)
Optical Tube Weight: 20 lbs (9.07 kg)
Dovetail Compatibility: Vixen type, or Losmandy type - choose above
