The Horsehead Nebula (IC 434) in Orion. Always a pleasure to see. From the Kitt Peak scope with the NOAO Mosaic CCD. Hydrogen-alpha in red, oxygen (OIII) in green, sulfur (SII) in blue.
Zeta Orionis is the bright star slightly to the left, and is not actually part of the nebula structure, but in the foreground.
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