NGC 1499, commonly called the California Nebula, is a vast cloud of glowing hydrogen and is the classic example of an emission nebula. It is very large spanning 2.5 degrees of sky but it's
surface brightness is so low that it cannot be seen by the naked eye unless viewing conditions are ideal.
This image is a 4 panel mosaic.
Camera: Atik 460ex w/EFW2 filter wheel
Filters: Astrodon Ha/RGB
Mount: CGEM DX
Exposure: Ha:R:G:B 600:192:192:192 (m) rgb bin 2x2