binning and sky subtraction › Forums › Variable Stars › PNV J00425895+4126279 › binning and sky subtraction 12 September 2017 at 5:08 pm #578557 Robin LeadbeaterParticipant Here are the target binning (blue) and sky subtraction (green) zones I used in ISIS to extract the spectrum of the PNV (The asymmetric sky background zones were deliberately chosen to avoid the cosmic ray hits) Robin
