My question is to all expirience atms who have made SCP espesially for SCT not for Schmidt/Wright astrophotoraphy system. Does somebody have a possibility to test SCP for surface astigmatism (due to its extremly small thickness) after the corrector have been finished completely? I mean testing using some professional interferometer. And if so, then how was the rezults and what is overall perfomance of the whole telescope?
Best regards, Alexander Yascovich yas@hea.iki.rssi.ru