During the more than ten last years Astrosib Company has been producing astronomical aspherical optics for amateur astronomy. Initially manufacturing of optics and telescopes (OTA) of Ritchey-Chretien system (RC) was chosen as one of the basic industrial directions of the company. After its birth in the beginning of the last century, due to known opticians Henri Chretien and George Ritchey, this optical system has quickly gained authority in the environment of astronomers. Within The whole decades telescopes of this system had been poorly accessible for amateur astronomy as such mirrors having the hyperbolic form, far from spherical and demanding thus high accuracy of manufacturing, are not applied for the mass production. Nevertheless, in our days there are already some firms serially manufacturing such optics and telescopes for the advanced astrophotographers. Now all the people interested to have RC have got not only an opportunity to buy it , but there is also an opportunity to choose.