ASTROSIB RC OTA telescopes saw their first light at 1995, and up to the present, production of RC optics and telescopes remains to be the chief business of our company.
After its appearance early in the 20th century due to a pair of famous opticists Henri Chretien and George Ritchey, that optical system quickly earned a great reputation among astronomers.
Notwithstanding the fact that within recent decades a significant leap was made in the hystory of computations of new wide-field optical systems, the Ritchey-Chretien system is still the most popular one among professionals and many amateur astrophotographers who, as a rule, have their own observatories.
One of this system's major advantages over many others is that it has only two main optical surfaces in its principal optical scheme which entails the possibility of using it in wide range of spectrum of light, and alignment simplicity. Legends and rumors about extreme difficulties of RC-systems alignment have gone long time ago.
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