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About this Image
The western part (NGC 6960) of the Veil Nebula also known as Cygnus Loop together with the eastern part (NGC 6992)
is a remnant of a supernova explosion that occurred about 30.000 - 40.000 years ago. It shows strong red H-alpha emission and blue-green O-III components.
The bright star 52-Cygni in the center of the image is shining at mag 4.2.
16" cassegrain in secondary focus at f/10
|Camera||SBIG STL-11000M at -10C, 8pos STL filter wheel|
|Filters||Baader LRGB, 7 mn Ha, 8 nm O-III|
|Date||Aug 07-08, 2008.|
|Sky Conditions||mag 5.5 sky, temperature 22C; 1.5-2" raw FWHM|
L:R:G:B = 60:40:40:40 min (10 min sub-exposures)
Ha:O-III = 120:120 min (30 min subexposures)
Maxim DL 4.5