4 image mosaic.
Takahashi Sky-90, Atik 460EX. Processed in DSS and CS5. Mosaic stitched in MS ICE.
Each image is 5 x 600s Ha 35nm 1x1
Using Noel's 'Ha false colour black space' action in PS.
Gamma Cygni:
(γ Cyg, γ Cygni) is the Bayer designation for a star in the northern constellation Cygnus, forming the intersection of an asterism of five stars called the Northern Cross. It has the traditional name Sadr
Compared to the Sun this is an enormous star, with 12 times the Sun's mass and about 150 times the Sun's radius. It is emitting over 33,000 as much energy as the Sun, at an effective temperature of 6,100 K in its outer envelope. This temperature is what gives the star the characteristic yellow-white hue of an F-type star. Massive stars such as this consume their nuclear fuel much more rapidly than the Sun, so the estimated age of this star is only about 12 million years old
Credit Wiki
Sunday, May 12, 2013
IC1318 - The Gamma Cygni Nebula
