I have a slow Schmidt-Cassegrain with Alt-Az mount, 235mm F10 scope and use a 6.3 reducer with my CCD camera. I use no guiding and short exposure of less than 100 secs. I discovered StarTools and my photos are now amazing. Thank you StarTools for turning my average photos into amazing ones.
Never download StarTools from anywhere else but startools.org.
This guide lets you create starless linear data using StarNet++.
A brief tutorial on using Siril via the Sirilic front-end.
You can convert everything you see to a format you find convenient. Give it a try!