how to stack with siril

the Siril window

Here is my method to stack a sequence of dithered light frames from a dslr

Easy when you know how.

Siril deals with sequences of bias, flat and light frames.

settings
File -> settings > misc -> FITS format
Set your fits extension -mine was fits

bias
set the current working directory (CWD to bias -> sequence -> go to stacking tab -> median stacking -> no normalisation -> start stacking

flat
set CWD to flat -> sequence -> sequences -> pre processing -> use offset -> browse to Bias_stacked.fits -> start pre-processing -> stacking -> median stacking -> normalisation multiplicative -> start stacking

light

• set CWD to light -> sequence -> sequencess-> pre processing -> use offset -> browse to Bias_stacked.fits -> use flat -> browse to  pp_flat_stacked.fits -> check demosaic FITS images before saving -> start pre processing
• hit Registration -> Choose registration method -> Global Star Alignment (deep sky) -> Go register
• hit Stacking -> Average stacking with rejection -> no normalisation ->  Rejection Sigma Clipping -> low 4 -> high 3 -> start stacking

That's it. Your stack is at:
 r_pp_stacked_Light_stacked.fits
in the same folder as your light frames.

There's a way to automate all this in a script. Just asked the devs how on the alarmingly quiet forum. Let's see what they say. [1]

[1] edit
Looking good:
Some Siril scripting examples and the list of Siril scripting commands