|
Thanks James & Steven I haven't seen any other 190 MN images on this site guess not many around , surprising considering the price and flat field at F5.3 with no other correctors needed. Thanks Greg no flattener or corrector used in the MN but I do use a coma corrector on my Newtonian both seem to have the same Ha halos. Interesting when using my previous QHY8 one shot colour the Ha stars were red with blue halos the only blue in a red image. The optical window in front of the ccd sensor may have a blue anti reflection coating with the mirror like coating on the Ha filter causing light to bounce around between them.
clear skies Ken
|