Horsehead Nebula

Horsehead Nebula (Bernard 33) in Orion

Technical Details Telescope: C11 Mount: MI-250 Camera: SBIG ST-10XME Filters: Astrodon LRGB Dates: January 24, 2006 Exposure: LRGB: L=4x10min, RGB=6x5min each for 130 minutes total at -25C Notes: The red emission nebula is known as IC 434.  The Horsehead nebula is Bernard 33 (B33) and is a dark nebula, that is, dust in the foreground, blocking the red emission nebula in the background.  This is just part of the nebula that covers most of the constellation Orion.  It is about 1,500 light years away.