While waiting on a moonless night to start imaging galaxies I used M67 to set up my Celestron 8SE SCT. It's certainly not ideal for imaging. But, it performs ok with the Starizona SCT Corrector II. There is some coma but It can mostly be cropped out. It's certainly far better than the previous Meade focal reducer I used with the scope. Now to wait on some cloudless moonless nights! That is probably too much to ask for! LOL!