Takahashi Ritchey-Chretien Telescopes
BRC 250 (1998)
This telescope is the first Takahashi Ritchey-Chretien Telescope. Both miroir have hyperbolic shape and there is a two lens corrector inside the focuser. It gives a giant 100mm diameter field which allow using all CCD camera as 6X7 or 6x9 argentic camerasOptical System: Baker Ritchey-Cretien |
FRC 300 (2002)
The new Takahashi Ritchey-Chretien Telescope. Both miroir have hyperbolic shape and there is a two lens corrector inside the focuser. It gives a giant 90mm diameter field which allow using all CCD camera as 6X7 or 6x9 argentic cameras. The temperature compensated secondary holder insures pinpoint stars during long exposures.The dedicated f/5.9 reducer produces a 36mmØ flat circle for CCD imaging at this shorter focal length.