Support@Seestar sigh I'm well aware of how it works, and clearly you are not understanding my suggestion how how to fix the problem. I'm not suggesting that it just skip past the area where it gets stuck to some place that there is no overlap. What I suggested (more than once now) is that it move inward a little, to create more overlap when it gets stuck.
Because the mosaic mode appears to spiral from the center slowing working its way outward, as it gets to the outer edges of the frame, and particularly (in my experience) the upper left corner several factors contribute to it failing to stack.
- The corners have more visible sensor noise (I've posted several examples. Please look at them).
- We're at the outside edge of the frame, so it's taken quite a while to get around the last circuit of the spiral which means more real time has passed (at least 2x the exposure time), and the sky has rotated quite a bit
- Because it's often centering its exposure part way outside the saved frame, the only overlap possible is over the half that is inside the frame, which is the noisy rotated bit from 1 and 2, and this hampers alignment.
If instead of it just getting stuck in one spot forever it simply shifted inward toward the center of the frame from wherever it is stuck, then it will create more overlap inside the frame. If it can stack those exposures it will reduce the noise in that corner, then it can proceed forward, around the spiral, and back out to to recover the area where it was stuck. Please read what I'm actually saying, before dismissing it out of hand.
