Orion 8″ Ritchey-Chretien
Ritchey-Chretien telescopes are available at a fraction of what normally prices are on the market. The number one choice of astrophotographers.
Optical design: Ritchey-Chretien
Optical diameter: 200mm
Focal length: 1600mm
Focal ratio: f/8.0
Optics type: Hyperbolic
Resolving power: 0.58arc*sec
Lowest useful magnification: 29x
Highest useful magnification: 300x
Limiting stellar magnitude: 14.2
Optical quality: Diffraction limited
Finder scope: None
Focuser: 2″ Crayford
Secondary mirror obstruction: 93mm
Secondary mirror obstruction by diameter: 46%
Secondary mirror obstruction by area: 22%
Tube material: Aluminum
Length of optical tube: 21.8 in.
Weight, optical tubeL 15.8 lbs.
Additional included accessories: Two 1″ and one 2″ removable extension tubes
Warranty: One year