|
The common Newt laser collimator will almost certainly not be accurate enough to complete collimation of an f/4 Newt with sufficient precision for your needs. Your secondary mirror looks like it is not properly centred and/or aligned in the focuser either. We cannot see the entire primary in it; only one mirror clip can be seen.
After centring the 2ndry in the focuser, I'd use a Cheshire followed by a star test to properly collimate the scope. Also recheck that secondary does not miss any part of the primary by looking for the 3 mirror clips in defocused star images.
|