I imaged this star forming region in M31 during the MASP star party in October 2006. I'd just had to rebuild the focuser during the day and so the collimation/alignment was not optimal. I have found this a challenging object to process in the past and this time was no exception!
Exposure: RGB: 60/55/50 minutes, 5 minute sub-exposures
Telescope: DBA Astronomy Certified 10 inch Newtonian