Hi: I've watched a couple tutorials trying to learn to use the BPP script...I'm confused about two issues:
1) do the hot/cold pixel removal algorithms still work well enough if you didn't dither while imaging?
2) in past with nebulosity (with an atik OSC with a sony low noise chip) I calibrated the lights with a dark master (not bias reduced) and a flat master (was bias reduced)..I didn't bother with dark flats. In PI with the BPP script...I see folks create the dark master (no bias reduction) and flat master (with bias reduction, ? and maybe using dark master as well??) using imageIntegration, and then they are listing master dark, master flat and master bias to use with the lights in the BPP script
...I'm not sure what is preventing the script from subtracting both dark (that has bias) and bias from the lights during calibration? Also one of the tutorials mentioned that you could use the dark master as well as the bias master to calibrate the flats while making a flat master...but I created a dark frame library at a separate time than the imaging session..so the darks match the lights for exposure and temperature..but they are not necessarily at the same orientation and focus of camera in OTA etc. Not sure if that matters given the scope cover is on...but, is it valid to use a master dark from a separate session for calibrating flats, or do most folks just calibrate the flats with the bias frames?
jeff
