BPP - (02) Add Darks
Load Darks files. You can add darks of different exposure time in this section, ie darks for lights and darks for flats. They will be grouped by exposure time using the exposure tolerance you specify and each MasterDark will be used in the corresponding image.
Note: A common error is using a calibrated (bias-subtracted) Master Dark frame, since the BPP script expects the Master Dark to include the Bias signal.