IC434 Horse Head

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Horse Head Nebula
Notice how few starts there are in front of the dark nebula. The bright emission nebula (upper 3/4 of the image) is IC434. The horse head nebula is Barnard 33 (B33). The reflection nebula at the bottom left is NGC2023.

The seeing at the start of the night was terrible, and most of the early frames had to be rejected. To make matters worse, light cloud also caused problems, resulting in even more rejected frames. So this image is stacked from the best 11 images out of the original 19.

 Date8th January 2011
 Exposure19x600s Ha, but only the best 11 were used
 CCD CameraST10
 Telescope250mm F4.8 Newtonian Reflector with MPCC coma corrector
 MountAP1200
 SoftwareMaximDL, CCDStack, PixInsight