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Focusing probs
Thanks Gbeal:
I suspect that at least part of my problem is that my objective mirror is not installed dead centre in the tube. My scope is too big and heavy to move indoors when I'm finished with it at nite, so I have to remove both mirrors each nite, then re-install again the next nite, which is a major collimation hassle. To give an idea, my objective mirror weighs ~4 kg...then I have the tube (5 feet) and it's a heavy mother, too!
I may have to look at a box/struts construction for my scope, as the present setup is just too bulky.
Anyway, with all this collimation, I have a hard time getting views that are "stable" each nite.
Just out of curiosity - what sort of pilot are you?
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