Horsehead Nebula to Orion Mosaic


I have decided to give mosaics a go. This turned out to be more difficult and complicated than I had thought. I hope to reshoot the RGB data as there was a difference in exposures between RGB filters by a factor of 100! Somehow the gain settings got mixed up is the best I can figure. Salvaging this data required a lot of work but I think all in all it looks pretty nice. I am sure there will be an updated version of this in the coming months, weather permitting.

Taken with the ASI1600MM-Cool and the Stellarvue 80mm ED APO at f4.8 384mm

Ha: 255×90″ (gain: 200.00) -20C
Blue: 104×90″ (gain: 200.00) -20C bin 1×1
Green: 104×90″ (gain: 200.00) -20C bin 1×1
Red: 104×90″ (gain: 200.00) -20C bin 1×1
Integration: 14.2 hours
RA center: 84.570 degrees
DEC center: -3.763 degrees
Pixel scale: 2.033 arcsec/pixel
Orientation: 127.913 degrees
Field radius: 2.766 degrees


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