I've been using Siril to convert and stack my raw files but sometimes it fails. When I get to the registration step I either get an immediate message that registration fails or it goes through the painstaking process of considering each image and rejecting it.
So far this happens to about 10% of my stacks.
I've tried telling it to use a different color channel (that worked once out of three times). I've also tried all the algorithm options.
Any idea what I am doing wrong? Is this just a limitation of Siril?
(Technical details: Nikon D7000 camera, 15-30m total integration time, different OTAs, mediocre to poor tracking)
I am also interested in suggestions for other linux based, open source, stacking software. I am aware of APP and PI and other commercial products, but at this time I am only interested in open source that runs under linux.