Quote:
|
Originally Posted by EzyStyles
cheers guys thanks for the reply. i was playing around with collimation last night and now it seems fine..  well better than before.. good idea john, might just try the ed80 first. arhh why couldnt they make scopes with fixed mirrors.. ... .. .. |
Because of the level of precision required such a scope would be a lot heavier. And materials expand and contract with changing temperatures and the bigger the scope the more sensitive the structure will be to climate. It's much easier and more practical to make scopes with collimatable optics. I'm sure you already got the hang of collimation, and you just got distracted by the 2ndry offset discussion and did some nasty things to your collimation in the process (looking at your last photo thru the focuser in the other thread) despite your better judgement (and you did not listen to me
).
You would probably enjoy using the ED80 very much. Unless you want to get into planetary imaging, for which your DSLR will not be so useful, I don't see much point to a C9.25.