Astronomy and astrophotography under California stars
The Horsehead Nebula
IC434, the Horsehead Nebula in Orion, taken with a Canon EOS 20D and Takahashi TOA-130F telescope. Click for a larger version.
Other Names/Objects IC434/B33 (Horsehead) / NGC2023 (reflection nebula) / NGC2024 (Flame Nebula)
Optics Takahashi TOA-130F Telescope at f/7.5
Mount Mountain Instruments MI-250 with Gemini on ATS portable pier
Camera Canon EOS 20D [ Hutech Type I ]
Exposure 60 minutes [ 20 x 3 minutes ] at ISO 1600
Calibration 20 darks | 15 flats | 0 bias
Air Temperature Unknown
Accessories Takahashi 35mm Flattener | Autoguided with piggybacked SV80S and ST-2000XM
Location GMARS in Landers, California
Date November 19, 2006
Notes Processing: Image acquisition, align, and combine with ImagesPlus v2.8. Levels, curves, sharpen, resize and save to JPG in Photoshop.

Larger versions:
1800 x 1200 (~1.0 MB)