Ritchey Chretien
- Home /
- Telescopes /
- Ritchey Chretien
Ritchey-Cretien
By modifying the Cassegrain design (2 hyperbolic mirrors), the coma can be eliminated in the RC telescope. RC telescopes can be used universally with a moderate aperture ratio. They are very popular. With correctors, they can also be used as astrographs.
Very compact and light Ritchey Crétien Travelling Astrograph with 6" aperture.
538.00 €
Estimated delivery time : 1-4 days (valid for new orders)
Powerful and lightweight 8" Ritchey Crétien with Quarz Optics and Carbon Fibre Tube.
1549.00 €
Estimated delivery time : 1-4 days (valid for new orders)
Powerful and lightweight 8" Ritchey Crétien with Quarz Optics.
999.00 €
Estimated delivery time : 1-4 days (valid for new orders)
Powerful 10" Ritchey Crétien with Quarz Optics and Carbon Fibre Tube.
3299.00 €
Estimated delivery time : 1-4 weeks (valid for new orders)
Powerful 12" Ritchey Chrétien with Quarz Optics and Carbon Fibre Tube.
4398.00 €
Estimated delivery time : 1-4 weeks (valid for new orders)
High quality 12" Ritchey Chretien by TS with Carbon Fibre Truss Tube.
4190.00 €
Estimated delivery time : 1-4 days (valid for new orders)
The 10 "Ritchey-Chretien is the ideal still transportable telescope for astrophotography and also well suited for visual observation.
2599.00 €
Estimated delivery time : 1-4 days (valid for new orders)
The TS 10" f/8 Ritchey-Chrétien Astrograph is a dream telescope for astrophotography.
- Aperture 10" / 250 mm
- Focal length 2000 mm
- Focal ratio f/8
- Hyperbolic primary and secondary mirror for very high sharpness on the optical axis and a large well-corrected field for astrophotography
- Mirrors made of fused silica for stable focus position
- 94% enhanced reflectivity on main and secondary mirror for an even brighter image
- Quicker cooling down thanks to open construction and primary mirror ventilation
- Two Losmandy style dovetail bars supplied - ideal for accessories like guiding scopes or a piggyback camera mount
- Carbon truss tube - more rigidity and better focus stability for astrophotography
- 3" MONORAIL focuser with M77x0.75 female thread on the extension tube and M74x0.75 male thread connection and 2" / 1.25" reduction adapter
- Extension tubes for the focuser (2x 25 mm, 1x 50 mm) are supplied (image at left)
- RC correctors for larger sensors are optionally available
- New! Primary mirror and the M117 connector for the focuser are decoupled from each other. The focuser can be adjusted (tilted) independently from the primary mirror.
2990.00 €
Estimated delivery time : 1-4 days (valid for new orders)
Ritchey Chretien astrograph with 250 mm aperture with corrector and fast focal ratio of f/6.4 for astrophotography with sensors up to full frame format
- Aperture 250 mm / focal length 1625.5 mm / focal ratio f/6.4
- High quality 3" rack and pinion focuser with internal corrector and 360° rotation - everything is screwed together
- Primary mirror and secondary mirror made of quartz glass for stable focus position
- 94% enhanced reflectivity on primary mirror and secondary mirror for a bright image and short exposure times
- Carbon truss tube with high quality workmanship for optimal stiffness and focus stability
- Working distances 55 mm from M48x0.75 thread (adapter included) and 73.7 mm from M68x1 thread for individual adaptations
- Two Losmandy style dovetail bars for adapting to mounts and attaching optional accessories such as guiding scope
- The focuser can be tilted independently from the primary mirror (tilting)
- Ventilation of the primary mirror accelerates cooling down
- Extensive accessories like 2" connection for observation, extension rings between focuser and telescope, finder shoe on the tube ...
- Each RC is checked and optimized by TS/APM before shipping. It is provided with a checklist.
4299.00 €
Estimated delivery time : 1-4 days (valid for new orders)
