Monday, May 27, 2013
Saturday, May 25, 2013
Thursday, May 16, 2013
The Eastern Veil, Caldwell 33, NGC 6992, NGC 6995, IC 1340, a photo by Mick Hyde on Flickr.
5 x 600s Ha 35nm 1x1 binned
Sunday, May 12, 2013
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.
(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
Thursday, May 09, 2013
Tuesday, May 07, 2013
The Cave Nebula, Sh2-155 or Caldwell 9 - Hubble Palette, a photo by Mick Hyde on Flickr.
Tricky one from last night, very faint.