Hi suzy, how "big" is the blue planetary nebula NGC 3918 ? I'm confident we are looking in the right area, but still struggling to find it.
Thanx for all your advice. Paul
EDIT: actually we found it! was smaller than I initially assumed. Found a reference that called it 8-10 arcseconds, so I could compare that to some of the double stars we had found
and WOW!! it really is blue, very surreal !