› Forums › Variable Stars › PNV J00425895+4126279 › binning and sky subtraction
12 September 2017 at 5:08 pm
#578557
![](https://britastro.org/wp-content/uploads/2016/11/picture-146-1478110706-80x80.jpg)
Participant
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