Yes, they are. But with subtle differences in the extent to which the stars are compressed and dispersed; how compact they are; the colours in the cluster and the colours in the foreground stars. The longer you spend looking, the more different they seem!
I love globulars. Always have; I guess it was the "wow" factor when I first saw Omega Centauri through a scope.
Nice one Jon, I don't know much about Globs but have always wondered if all stars are white or can they have stars at varying temperatures, I don't recall seeing any image with stars of different colours. that would look nice.
as for the image, I'm guessing your focus was a tiny bit off and PA? was it taken with the meade? is it on a wedge?
Globs are pretty much the only objects you can image whether the moon is out or not. Also an excellent test objects for tracking and focus. I'd suggest a Baht Mask. Well done.
Apparently NGc2808 is known for having stars at different stages of the main sequence: most globs consist just of old stars.
Yes, focus was a bit off. I just "snapped" this to show my mother howitzer all worked. PA should have been ok - the Meade is on the Losmandy G11 and the subs were guided - but it was windy and I get a fair bit of flexure between the OTA and guidescope when it's windy. I've got an OAG just recently but am having trouble getting the cameras parfocal.
Reason I mentioned PA was cause you can makeout a bit of field rotation in the corners.
yes, focusing the OAG guidecam and main camera can be tricky. which OAG do you have? however guiding with the oag will give very good results.
so are there any younger globs where you can see blue and red stars? I'll have to brush on my star phases.
