Up here, 65N, the astronomical darkness is over today at 08.04,2010.
I add here a collection from all of my astro images from this winter season. Images are in chronological order, oldest at first.
There is two versions of each image, one in a natural colors and an other in a HST-palette (Hubble Space Telescope)
Natural colors are composed from the narrowband channels, red=80%H-alpha+20%S-II, Green=O-III and Blue=80%O-III+20%H-alpha to compensate othewise missing H-beta.
HST-palette, Red=S-II, Green=H-alpha and Blue=O-III
Pelican nebula Detail
Keywords:astro images, astronomical images, narrow band, narrowband, nebula, nebulae