Details:
Horsehead Nebula
imaged 18 Dec 2011 into morning of 19 Dec 2011
scope: Orion EON80ED
camera: Atik 314L+
Details:
Ha: 4x1800s, 6x600s
SII, OIII: 3x1800s (bin1) each
SII, OIII: 6x600s (bin2) each
RGB: 4x600s (bin2) each
Total: 500 min (8hrs, 20 min)