Currently in a general lockdown I try to think about something else.
Then, I shot deep sky. For this image, I used a Canon 100D where the original filter has been removed and replaced by another one with higher cutoff and dedicated to astronomy. I’ve also added a narrowband filter, called Halpha.
This is why my result is monochrome.
But thanks to this filter, the contrast is really enhanced for all hydrogen clouds that emit light in the same wavelength that the filter.
All the process has been done with the current dev branch of Siril.
This is an addition of 48 images of 120s.