Well i feel as thought it is the dogbowl shot with the curvature in the field. Still working on the 8" so i stuck with the 127Ed and the Wo 0.8 reducer. I really need to sort this out - somehow this must work? Anyway it is of 3 hours and 32 minutes duration of wasted effort from last night and this morning guiding and pushing the camera at 4 degrees and iso400 - and not using a LP filter the shots were 3minutes each.
so i did two versions processed in pixinsight and a tweak with special herbs and spices- not happy with either to be honest