The Horsehead Nebula

Dark Nebula in Orion

Uploaded 2/17/2001

This dark nebula in the shape of a equines cranium, is notoriously difficult to photograph. Even the slightest amount of light pollution dilutes its contrast greatly, and hopes of balanced color photography is dashed. This shot was taken to compare the resolution and depth comparison to gas hypered tech pan film. For the same exposure with identical equipment and skies, the final comparison revealed the CCD shot went two magnitudes fainter, and had 1/3 the apparent "grain".

Instrument:  12.5" f/5 Home made Newtonian
CCD Camera:  SBIG237
Exposure:  LRGB = 70:20:20:24 (RGB Binned 2x2)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 3 arcseconds, Transparency 8/10
Outside Temperature:  25 F
CCD Temperature:  -25 F
Processing:  Maxim DL, Photoshop, PW Pro.

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