Hi all:
Here is an M13 I have been working on this spring and summer, (imaging nights have been few and far between). My goal was to go much deeper than I have in the past. I have always been dissatisfied with the appearance of the fainter stars in the outer regions of the cluster in my globular images, these stars have looked more like noise than stars. So for this image I used (18) fifteen minute subs for the luminance channel and about (20) 5 minute subs each for the R, G and B channels. It turned out better than my previous efforts, which involved much shorter total imaging time.
This first image is a medium crop. I personally find this to be most aesthetically pleasing view. The next image is a wide field, pretty much full frame, but with the edges cropped to get rid of alignment variations. The final image is an extreme crop of the cluster alone. These are all the same image, just cropped quite differently.
The full frame image (unfortunately a jpeg, it’s not nearly as rich as the 60M tiff) is here, before any cropping. There are dozens of tiny galaxies in the background including a nifty edge-on barred spiral at the right edge that I’ve not noticed before.
http://home.comcast.net/~jameslbrown/pwpimages/M13%20LRGB%20Uncropped%281%29.jpg
Thanks for any comments, Jim
TEC APO 140 with TEC field flattener
Astro-Physics Mach 1 Mount
Finger Lakes Instruments ML 11002M Camera
Finger Lakes Instruments PDF focuser
Finger Lakes Instruments CFW 2-7 Filter Wheel with Baader Filters
Starlight Xpress Lodestar guider with mini-Borg guide lens.
Maxim DL
Photoshop CS2
CCD Commander.
Here is an M13 I have been working on this spring and summer, (imaging nights have been few and far between). My goal was to go much deeper than I have in the past. I have always been dissatisfied with the appearance of the fainter stars in the outer regions of the cluster in my globular images, these stars have looked more like noise than stars. So for this image I used (18) fifteen minute subs for the luminance channel and about (20) 5 minute subs each for the R, G and B channels. It turned out better than my previous efforts, which involved much shorter total imaging time.
This first image is a medium crop. I personally find this to be most aesthetically pleasing view. The next image is a wide field, pretty much full frame, but with the edges cropped to get rid of alignment variations. The final image is an extreme crop of the cluster alone. These are all the same image, just cropped quite differently.
The full frame image (unfortunately a jpeg, it’s not nearly as rich as the 60M tiff) is here, before any cropping. There are dozens of tiny galaxies in the background including a nifty edge-on barred spiral at the right edge that I’ve not noticed before.
http://home.comcast.net/~jameslbrown/pwpimages/M13%20LRGB%20Uncropped%281%29.jpg
Thanks for any comments, Jim
TEC APO 140 with TEC field flattener
Astro-Physics Mach 1 Mount
Finger Lakes Instruments ML 11002M Camera
Finger Lakes Instruments PDF focuser
Finger Lakes Instruments CFW 2-7 Filter Wheel with Baader Filters
Starlight Xpress Lodestar guider with mini-Borg guide lens.
Maxim DL
Photoshop CS2
CCD Commander.
Attached Image:
