Streaks on a stacked star field
Those are probably just &quot;hot pixels&quot; that don't move on the sensor like the real stars do, so that the stacking spread them out in an arc.
I don't think the software processes and treats each star separately, they can't be &quot;skipped stars&quot; mingled with &quot;recognized stars&quot;. Notice that they are all 1 pixel wide, whereas stars are much wider.