We def need a way to ensure the centre is still precise before each sub is taken, the pointing tolerance should be reduced here as it seems too large at the moment. If we can also get a way to confirm angle/rotation, then it would be the perfect solution to maximise the amount of overlapping data, reducing the amount of the frame we need to crop out later. As Astrophotography is a game of stacking 'overlapped' data only, this really is a must have. Pls.