Niels V. Christensen
Location of Photo:
Date/Time of photo:
Please use this link info. http://astrob.in/323837/0/
The Horsehead Nebula picture was composed as a HaL(lum part)-RGB picture. The centerpart of the Horsehead is mixed with data taken from this picture: http://astrob.in/316903/B/ Exposure details, the WF data: Ha=16x5min. L=10x120sec. R,G,B=3x7x120sec.