Great observations Paddy
,
Very interesting disscusion.I have been doing some observing lately(I Will post them soon).
M57's central star is apparantly magnitude 15 and at low power i keep thinking that I can see the central star but upping up the power makes the star dissapear.I am not sure what is the cause, a physcological problem or power related problem.
Also the nearby galaxy Ic 1296(mag 14.8) seems to come in and out of view,Phychological or seeing?
I really don't know.
Cheers Orestis