The outstanding optical design of Ritchey-Chretien astrographs allows you to capture spectacular deep sky objects.
Unlike conventional Newtonian and Schmidt-Cassegrain telescopes, which are prone to coma, the Ritchey-Chretien design uses hyperbolic primary and secondary mirrors, made of BK7 glass, to achieve virtually coma-free images. Images are also free from chromatic aberration as no lenses are involved.
- an Orion Ritchey-Chretien Astrograph ideal for small format cameras such as the StarShoot series or DSLRs. The optics fully illuminate large DSLR sensors and deliver point-like stars right out to the edge of the field of view.
- the RC astrograph has a Crayford focuser with reduction ratio fine focusing and an engraved millimetre scale on the focuser.
- the secondary mirror is marked in the centre for easy collimation.
- the enamelled steel OTA is relatively light and has a prism rail on the underside for easy attachment to equatorial mounts.
- interior of the OTA is equipped with a specially engineered stray light baffle system. The primary mirror tube and the secondary mirror shield are roughened inside for maximum image contrast.
It not only matters which telescope you buy but also where you buy it. Our additional services:
- We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
- We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
