24 inch Ritchey Chretien
The Ritchey Chretien telescope is a Cassegrain telescope without coma and a large field of view The RC has a hyperbolic primary and secundary,
is used in the larger observatory telescopes like the 10 m. Keck telescope and the 2.4m. Hubble telescope. For extensive information see also the web-site of Oldham Optical . Recently we made a 14.5 inch RC for an amateur astronomer in Holland 
The finished telescope and the electronics control unit 
The finished telescope and control station
The back of the telescope
The back of the telescope
The viewfinder
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