in the last days I have been experimenting a lot with siril and so I am reading all the scripts that comes with it.
I have a few doubts:
Are bias frame needed when preprocessing the light with darks/flats?
if you have a look at the script “DSLR_preprocessing_Cosmetic.ssf” that cames with siril we can see that the bias are integrated inside the flats and then they are not used to make the lights, because they are already inside the flats
preprocess flat_ -bias=../biases/bias_stacked preprocess light_ -dark=../darks/dark_stacked -flat=../flats/pp_flat_stacked -cfa -equalize_cfa
but, in “DSLR_Preprocessing_NoDark.ssf” they are both into flats and lights
preprocess flat_ -bias=../biases/bias_stacked preprocess light_ -bias=../biases/bias_stacked -flat=../flats/pp_flat_stacked -equalize_cfa -debayer -stretch
again, in “DSLR_Preprocessing_NoFlat.ssf” they are not used at all:
preprocess light_ -dark=../darks/dark_stacked -cfa -debayer -stretch
From free-astro i found another two interesting script like “DSLR_preprocessing_opt.ssf” here the bias are used both in the preprocess of flat, dark and lights
preprocess flat_ -bias=../biases/bias_stacked preprocess dark_ -bias=../biases/bias_stacked preprocess light_ -dark=../darks/pp_dark_stacked -flat=../flats/pp_flat_stacked -bias=../biases/bias_stacked -opt -cfa -equalize_cfa -debayer
I am really confused, where I should use the bias?
Maybe my doubts are silly for experienced users but I am learning and I would like to make the best results possible
btw in “DSLR_preprocessing_opt.ssf” and “DSLR_startrail.ssf” I found a strange piece of code:
#stack calibrated lights stack pp_light_ max #That's a workaround here to save result in another place. #These lines are not mandatory #load image in memory load pp_light_stacked #and save it at root cd .. save result close
maybe this workaround is not anymore needed because there is the