Hi everyone,
Here's my latest image of the Horsehead Nebula. The image was taken over 3 different nights.
Higher Resolution image
http://www.skylab.com.au/pmsa/Horsehead%20Nebula.html
Exposure Details.
Telescope 12-inch f/5 reflector telescope, hand guided.
Camera Canon EOS 300D Digital Rebel (not modified).
Exposures Taken over 3 nights.
Dec 4, 2005
5 x 6 minute exposures @ ISO400 +
2 x 10 minute exposures @ ISO200
Dec 19, 2005
7 x 4 minute exposures @ ISO800
Jan 29, 2006
12 x 5 minute exposures @ ISO800
Total Exposure time approx. 138 minutes (2 hours 18 minutes).
The Horsehead Nebula.
IC 434 (Barnard 33) & NGC 2023.
One of the most popularly known celestial objects to amateur astronomers is the Horsehead Nebula. Situated in the constellation of Orion, the Horsehead Nebula is a dark nebula about 1500 light-years distance from us. The familiar horse-head shape (centre image) is formed from a dark non-luminous nebula (Barnard 33) that silhouettes itself against the reddish-pink glow of the background emission nebula IC 434. At lower left is the larger bright bluish reflection nebula NGC 2023 which reflects strong blue light from the star that lays at its centre. To the immediate lower left of the Horsehead nebula is a tiny yellowish nebula projecting from the variable star V615 Orionis which assists in illuminating some of the very faint nebula lurking at the base of the horsehead.
Clear Skies
Paul Mayo