Veil Nebula (NGC 6992)

clic for 30% size 793 x 1178 (475 kB)

Clic here for 60% size 1585x2355 (1400 kB)


About this Image

The eastern part of the Veil Nebula (NGC 6992) together with the other parts is a remnant of a supernova explosion that occurred about30.000 - 40.000 years ago. It shows strong red H-alpha emission and blue-green O-III components.
Compare a false color image of the same area here.
It is located 1,400 light years away in the constellation of Cygnus.
Find the full Veil area as mosaic here.
North is up.


Technical Details
Optics

410 mm cassegrain in corrected prime focus at f/3

Mount MK-100 GEM
Camera SBIG STL-11000M at -15C, internal filter wheel
Filters All Astronomik (H-alpha 15 nm, O-III + GB)
Date June 25 - July 14 , 2005
Location Wildon/Austria
Sky Conditions mag 5 sky, temperature 15-20 C,
Exposure Ha = 180 minutes, O-III = 120 minutes (30-minute sub-exposures),
GB= 30:30 min (10-minute sub-exposures)
all 1x1.
Processing Image aquisition, calibration and color synthesis in Maxim DL 4.0;
Photoshop: H-alpha used as red and as L channel; O-III blended with green and blue channel;