Good morning everyone,
after some mail exchange with the company itself, and watching some razor-sharp, impressive image (they have an interesting FB group) I am seriously considering to purchase a f/20 300 mm Cassegrain from CFF. While there are probably at least 20 users of these telescope out there, I m quite surprised no one has shared a star test to the telescopes. It's usually the first thing I do when buy a new instrument, usually followed by a Roddier test after a while to get quantitative result.
CFF claims a Strehl around 0.96 for these scopes (referred to both mirrors, not only the primary) so there's no doubt we are not dealing with a lemon, as you funny guys say. I d be very happy to see that the Classical Cassegrain has finally found a manufacturer which bets on them, producting in wide series with reliable quality! If properly made (that is not easy), they are probably the best planetary telescopes among the Cassegrain derivatives, having some advantage also upon Newtonians.
I think it could be very useful for the community if some of the owners of these telescopes will post their star tests, or also talk about how the out of focus images look at the eyepiece.
Edited by Vinny1980, 07 August 2019 - 08:28 AM.