Finally got a break in the clouds on Sat/Sun and got some time to play with
the DSI again on Sunday AM. After experiencing problems with polar alignment
I removed the wedge and took the shots below with shorter, stacked,
exposures. Still experienced tracking issues in ALT-AZ mode and on Sunday
daytime discovered that the drive calibration and training were out. It
appears that this had been the cause of the tracking issues when polar
aligned also.

This has been fixed and I'll have another go with polar aligment and longer
exposures when we get another gap in the cloud.

30 x 21s exposures stacked.

14 x 60s exposures stacked

M57 40 x 30s exposures stacked

M92 22 x 21s exposures stacked.