25 seconds iso 6400 f3.5 for this, but it is (some of) 3 rows of 7 frames. cropped in post so probably 2 * 5 with a 30%ish overlap
The TSE is a bit slow at f3.5 for astro but its so good at that aperture it works well, canon s24/1.4L needs 2.8 before its really usable. Samyangs 24/1.4 is better. I normally use my sigma 50 but that isnt working on the sony at the moment.