What I thought to be really good conditions (no clouds, wind or dew) I set up my gear a couple of nights ago and happily snapped away for a few hours.
The next day I had a quick look at some of the images I had captured and was somewhat disappointed in that the images taken seemed to not be as clear/focused as in the past. I always use a bahtinov mask for focusing and I paid careful attention to get it right.
I'm either using the wrong techniques to capture, stack and process (haven't done anything different to what I've always done) or something is not right with my gear
The attached images are a little bit less in quality than I have been able to achieve in the past and I noticed some dust spots that were not there before. I would appreciate some input regarding what I've captured and should I be considering sending the scope to get the glass cleaned (visually I can faintly see what looks like 'sanblasting' and probably could do with a proper cleaning).
Helix LRGB 1x300 each filter
NGC6559 6x300 Ha7nm
Little in the way of processing... stack and stretch.
Cheers
Rocky