The sky cleared up, with seeing 4/10 and transparency 7/10.
Sharpcap upgrades again from 2.7 to 2.8 this time, and it's apparently faster.
Taken at 0453 (UT), using the "skip mode", i.e. to skip some pixels in order to burst the frame rate at the expense of lower resolution:
Another one at 0523 (UT), using near full resolution (crop a bit), the frame rate is much slower, and it might result in some field rotations... a much bigger file (nearly 9G of data), but high resolution full disc shot in a single capture!