B33 Horsehead Nebula
Located 1500 light-years from Earth, the Horsehead Nebula consists of dark dust and gas stretching 2-3 lightyears across. The red nebula behind it is IC434, consisting of hydrogen gas energized by a nearby star. The blue nebula at the lower-left corner is NGC2023, and just to the left of the image is Alnitak, the far-left star of Orion's belt. North is to the left.

Scope/Mount: AstroTech AT8RC 8" F8 Ritchey-Chretien with ATFF2 Field Flattener, Celestron CI-700 Mount
Camera: Orion StarShoot Pro V2 one-shot color
Guiding: QHY5L-IIM through Orion Deluxe OAG, PHD guiding software
Exposure: (12) 5 min and (6) 10 min
Software: Nebulosity, PhotoShop CS2
Comment: 12-26-14, Tierra del Sol, CA. Light wind, cresent moon, below average seeing.