Clic here for 42% size 3000x2478 (3000 kB)
This mosaic displays the Veil Nebula, a supernova remnant showing a very large angular size - six times the diameter of the full moon.
Different parts of it are known as the "Cygnus Loop" including catalog numbers NGC 6960, NGC 6979, NGC 6992, and NGC 6995.
410 mm cassegrain in corrected prime focus at f/3
About this Image
The supernova explosion occurred about 30.000 - 40.000 years ago. It shows strong red H-alpha emission and blue-green O-III components.
It is located 1,400 light years away in the constellation of Cygnus.
Find a close-up on the eastern part here.
Find a close-up on the western part here.
North is up.
Technical Details
Optics
Mount
MK-100 GEM
Camera
SBIG STL-11000M at -15C, internal filter wheel
Filters
All Astronomik (H-alpha + O-III + B)
Date
June - Aug 2005
Location
Wildon/Austria
Sky Conditions
mag 5 sky, temperature 15-20 C,
Exposure
For each frame: Ha = 90 minutes, O-III = 90 minutes (30-minute sub-exposures),
B= 40 min (10-minute sub-exposures); all 1x1.
Processing
6-pane mosaic; Image aquisition, calibration and color synthesis in Maxim DL 4.11;
Photoshop: H-alpha used as red channel; O-III blended with green and blue channel; mosaic assembling