Clic here for 60% size 2400x1570 (636 kB)
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.
|
|
|
Optics |
Planewave CDK17 cassegrain at f/6.8 |
Mount | GM2000 GEM |
Camera | SBIG STL-11000M at -20C, internal filter wheel |
Filters | Baader LRGB |
Date | Aug 30, 2008 |
Location | Altaussee/Austria |
Sky Conditions | mag 5.5-6 sky, seeing 1.7 - 2.1", temperature 10 C, |
Exposure |
R:G:B= 20:20:20 min (10-minute sub-exposures), all 1x1. |
Processing |
Image aquisition in Maxim DL 4.56; Calibration and stacking in CCDStack;
Final processing in Photoshop CS3 |