I took this data a few years back. It is a 4-frame mosaic of the Double Cluster/Stock 2 region in Perseus taken with the Sky 90s/M26Cs. Each frame is 2-hours of 3-minute subs and North is to the right. It is only with the recent availability of Noel Carboni’s AstroFlat plugin that I have finally been able to put this one together.
