Further tuning the telescope optics: looking for the right distance corrector-sensor (it’s not the Starizona advertized 134.5mm ) and dealing with OAG focus, field, illumination, shadow and also with the new T-Ring filter L-Pro from Optolong.
Welcome to the new layout of Drogenberg!
Provider ONE.COM switches to a new – paying – website editor, and abandons the free, simple editor I was using. This website will be supported by WordPress onwards.
Always interested in your feedback! Enjoy.