I managed to setup the scope last night (actually first light for my VC200L) and did some imaging on the SN in IC4901.
Here are my offerings - a stack of 5 x 10min subs through an 8 inch scope beside a quarter moon looking south towards Brisbane. I have run a DBE on these in PixInsight which revealed just how many dust bunnies I have on my CCD - look closely at the thumbnail of the inverted image below
. My next post will be to Exfso about a light box!
The reference star that Terry indicated in a previous post had blown out completely in these 10min images, however, I had a one 5 min sub taken at Bin 1 in which that star was ~90% saturated. While this is pushing the friendship of linearity with an ABG chip, I followed a tutorial for Maxim DL Photometry and calculated a magnitude of the SN at ~15.2. (This was taken through a luminance filter) I'd be interested to know how this compares to measurements taken by those who actually know what they're doing!
As for the VC200L - very impressed with the field flatness - the results from CCD inspector were <10% curvature and this was with collimation done on the bench only as I didn't have time to fiddle with a star test. This yields a small round star without elongation visible in the OAG prism of the QSI. I am sure this helps the guide software track an accurate centroid. The guiding graph was almost flat.
Cheers
DT