Horsehead Nebula by Adam Block/NOAO/ AURA/NSF
Combinatin of data from both a 16in and 20in RC at f/8 with an SBIG ST10XME CCD camera and
CFW8A color filter wheel.  LRGB exposure times were: Luminance = 170 minutes binned 1x1,
Red = 20 minutes binned 2x2, Green = 20 minutes binned 2x2, Blue = 20 minutes binned 2x2.
The Luminance data is taken from 80 minutes of exposure from the 16in RC (Louis and Jennifer Goldring)
and 90 minutes of exposure time from the 20in RC (Rex Wilcox and Raynett Hull).

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Revised: January 22, 2004 09:52:07 AM.
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