Hola a todos.
Not long ago I got a used Bresser 127mm Mak, f/15. It needed a few fixes but is a good scope. The detail I see is more than I expected.
Anyway, the secondary aluminized spot imposes a 30% central obstruction. BUT! When you add in the secondary baffle, which flares out, that jumps to about 2" or 40%!
So I'm thinking of removing the secondary baffle and see what the views are.
Has anyone done this and what were your findings? I would tend to think that most affected would be daytime views, but I don't use it in the daytime. Also, If i understand correctly, the venerable Questar 3.5 does not have a secondary baffle.
Any thoughts or experiences would be appreciated.
BTW: The Bresser 127mm 'Messier' Mak is essentially the same scope as the Explore Scientific 127mm, f/15 Mak.
My second Q is that some have added focusers to the back port of Maks or SCTs to do away with annoying image shift with the regular focusing mechanism. My scope has some, but not too much.
But isn't the optimum spacing in the system very important to have the best correction? In other words, if you change the spacing from the mirror to the secondary a significant amount to compensate for the added focuser length, are you possibly changing the level of spherical aberration and thus not getting the best images?
Thanks. Have to go to work for a couple hours, but I'll Be Back.