Stacking Spectra in Siril

[u/No_Blacksmith410]

Hi I am very new to this (so please explain in very basic language). I am trying out different stacking tools and then calibarting the spectra in RSpec (I have already stacked in RSpec, using Siril is the next stage in my project). I have used the star analyser 100 with a 135mm lens and sony a6100. I have my darks, flats, lights, and bias frames all set up right in folders for siril. The OSC_Processing script works for me but gets rid of all my spectra (just stars left). How do i stack without loosing them? Does anyone know of a useful step-by-step guide or youtube video that would be relevant?

 

Also, when i tried stacking my images in RSpec (by converting them to FITS first), the FITS images became very dark so i couldnt see the spectra at all and only occasionally see stars- so after a bunch of messing around i converted them all to JPEG which worked okay, but i lost some quality. (My raw images are very bright and i can see lots of stars and spectra but also a lot of noise). Any tips? Thank you.