A one-evening stack of Orion. I used the masking technique found a href="http://www.astropix.com/HTML/J_DIGIT/LAYMASK.HTM"; target="_blank"HERE/a to combine the short and long exposures so as to not blow out the core.br/ br/Total Exposure Time: about 2:20br/Taken with WO 98FLTbr/QHY9M with QHY LRGB Filtersbr/br/12 x 5min Lbr/10 x 30sec Lbr/5 x 5min RGBbr/ br/February 9, 2013