I do have OCD when it comes to the Asiair polar alignment feature and re park and redo it 3 or 4 times to get as near zero as possible Martin.
I do still get slightly oval stars, but i always put that down to not having a field flattener
I don't seem to have any issue with field rotation, but that isn't anything i have thought about tbh.
Pleased you like the image.
I do have a 10 inch newt that i have still to use on this mount but with it being 1200mm focal length i too cannot get more than 30 seconds unguided using it.
I will get a guide camera at some stage though mate
