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Nebula
  Flame - Horsehead.jpg -  NGC2024     Flame Nebula      and      IC434      Horsehead Nebula   Dark Nebula   distance: 900-1,500 ly     image size: 100'x100'  FLI PL-16803 camera     FSQ-106EDX III scope @ 530mm  (f/5)     AP900 mount 8.8 hour total exposure     HaLRGB 190:100:90:80:70 subs 10:10:10:10:10 binned 1:1:2:2:2     (3.49" per pixel unbinned)   Guiding with ST-402XME camera on 2.8" Pronto scope @ 475mm (f/6.8)   The Horsehead Nebula gets its name from the obvious similarity to the profile of a horse, making it one of the most familiar astronomical objects. Both images are created by clouds of dust blocking light from a background emission nebula which has been ionized by the nearby bright star Sigma Orionis (bright star above the horse’s head) and by several hot, young stars born within the nebula. This emission nebula is between 1,500 and 1,600 light years away and hundreds of light years across. The nearby Flame Nebula also receives light from the star Alnitak  (brightest star in the photo)  reflected off dust clouds resulting in a slight orange tint to a region of the background emission nebula.   
Horsehead
Elephant Trunk
IC 63
IC 0410
IC 1805 Heart

NGC2024     Flame Nebula     and     IC434     Horsehead Nebula
Dark Nebula

distance: 900-1,500 ly     image size: 100'x100'

FLI PL-16803 camera     FSQ-106EDX III scope @ 530mm (f/5)     AP900 mount
8.8 hour total exposure     HaLRGB 190:100:90:80:70 subs 10:10:10:10:10 binned 1:1:2:2:2     (3.49" per pixel unbinned)
Guiding with ST-402XME camera on 2.8" Pronto scope @ 475mm (f/6.8)

The Horsehead Nebula gets its name from the obvious similarity to the profile of a horse, making it one of the most familiar astronomical objects. Both images are created by clouds of dust blocking light from a background emission nebula which has been ionized by the nearby bright star Sigma Orionis (bright star above the horse’s head) and by several hot, young stars born within the nebula. This emission nebula is between 1,500 and 1,600 light years away and hundreds of light years across. The nearby Flame Nebula also receives light from the star Alnitak (brightest star in the photo) reflected off dust clouds resulting in a slight orange tint to a region of the background emission nebula.

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