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collimation of 8 inch rc frustration
howdy all!
this is my first post on ice in space. I've got an 8 inch gso rc, and it's been out of collimation for over a year now. every time I think I'm about to get the technique right, it seems I need more accessories. the equipment I have to do this now includes a Takahashi collimating scope, a howie-glatter laser, and a tilt adjuster on the focuser .
I would like to be able to collimate my scope inside so as not to waste precious photo time. I understand that when I shine my laser through the eyepiece and towards the wall in front of the scope, that I should see concentric rings. instead I only see a single large red ring, despite racking the focus in and out.
I reckon I can collimate my scope if I could see some rings, but only see the one
hoping for some good simple advice please!
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