Antilhue - Chile

IC 434 + B33 Horsehead Nebula
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Image Data

Designation IC 434 (top), B33 (Horsehead Nebula),  NGC 2023 (bottom left)
Constellation Orion  (Ori)
Description The Horsehead nebula (B33) is actually a dark interstellar cloud in our Milky Way that obscures part of a bright red emission nebula. This is IC 434 which is excited by bright Alnitak (Zeta Ori) just outside the field on the left (north). The blue reflection nebula NGC 2023 shines at lower left. The field of view is approx. 26' x 39'.

Here is a higher resolution image taken with a 14.5" RC telescope.

Exposure LRGB 60:54:48:60 min @ -14C, all 1x1
Camera SBIG ST-10XE selfguided,  CFW-8,  Astronomik Clear IR filter and SBIG (CS) RGB Filterset
Optics Astro-Physics AP155EDFS @ f/7.2 (prime focus)
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD,  Debloomer, Adobe Photoshop 6.0
Location - Date - Time San Esteban (Chile) - 03Jan2003 - 04:00 UTC for G+R and 04Jan2003 - 04:00 UTC for B+L.
Conditions Transparency 6-7,  Seeing 5-6, Temperature +13C