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This is from last night's session. Messier 15. It is almost impossible to not blow out the core without doing HDR processing. It has the densest core of any of our galaxy's globular clusters, and is suspected of harbouring a black hole at the centre.
It's a beautiful image, thanks for sharing with us.
What I have noticed from several posted glob images, my own included, is that when trying to bring out the core, the core takes on an almost "peachey" hue. Not the color you would expect from a globular cluster. I have not yet found a way around this condition. Of course, it could just be my monitor not showing the "true" color. Hmmm.
Well, there are supposed to be more red and yellow stars in a glob than in the galactic population. But I hear you about the colour: it's not quite right, IMO.
DSO AP:Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP:Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Helena Observatory (H2O)Astrobin
Didn't want to post my image here, but here is a link to it so you can see nearly the same color exhibited by the core. app.php/gallery/image/821/source
JT