Canon 350D Hap Griffin Baader Mod
26x600sec at iso 1600
30 Darks/Flats/Bias
APM/TMB 130/780 with APM Field Flattener
Baader 7nm H alpha filter

4.5 hours of Ha data on the Eastern Section of the Veil Nebula in Cygnus taken during a full moon. Thin clouds interfered with continuous imaging.

NGC 6992 is the long nebula on the left, and NGC 6995 is the wider section on the right.

The Veil Nebula, also known as the Cygnus Loop is a large, relatively faint supernova remnant in the constellation Cygnus. The source supernova exploded some 5,000 to 8,000 years ago, and the remnants have since expanded to cover an area of 3 degrees. The distance to the nebula is not precisely known, with estimates ranging from 1,400 to 2,600 light-years. It was discovered on 1784 September 5 by William Herschel.

August 17, 2008