I've added two more images from ground based scopes to my Fickle Finger comparison.
I have added a crop from the just released Eta Carina image by the ESO 2.2m telescope in Chile using the big wide field imager camera (I cropped directly from the 134meg tiff image) and a crop from what is the best image I have seen of the Keyhole by an amateur (and perhaps by anyone?) - that by Johannes Schedler using a magnificent 20" corrected Cassegrain in excellent conditions from Namibia, it is an interesting comparison:
http://www.pbase.com/strongmanmike20...53793/original
Interesting to compare the star sizes, all three ground based scopes have about the same size star images (slightly tighter in Yohannes image) and none used adaptive optics either Peter
....the HST has pin sharp dots of course.
Oh and here's another interesting bit I really like, cropped from the full frame image:
http://www.pbase.com/strongmanmike20...56782/original
More fun
Mike