The Horsehead Nebula is a dark nebula in the Orion constellation. It is approximately 1500 light years from Earth. It is part of a swirling cloud of dark dust and gases, shaped like a horse's head. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left.
Equipment: Exposure details: Location:
Telescope: FSQ106N
Mount: EQ6
Camera: SBIG STL-11000M
Filters: SBIG LRGB, Astrodon Ha
Ha: 3x20min
Luminance: 3x20min
Red: 6x10min
Green: 6x10min
Blue: 6x10min
Rachia, Veroia, Greece
N 40o29'00.0" - E 22o12'55.0"
15 March 2009
Image details:
Acquisition: MaxImDL Reduction/stacking: MaxImDL RGB weights: G2V Star
RGB combine: MaxImDL HaLRGB creation: Photoshop CS3
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