Had a very good ISS pass a few days ago.
200/1200 dobson
ZWO ASI 290MC with a 2.5x Powermate (imaging camera)
ZWO ASI 1600MM (guide camera)
400 gain
1.1 msec exposure
Recorded at 160 fps
The ZWO 1600 was attached to the finder scope of the dob. Combined with a tablet fixed to the telescope I could manually track the entire pass standing upright, looking at the tablet screen instead of through the finder scope. This allowed for much smoother tracking, escpecially towards the zenith.
Out of roughly 80.000 frames 1300 contained the ISS. The gif consists of 70 images captured near the zenith. The frames are clearly overexposed, gonna have to reduce exposure time next time. Overall I'm quite happy with how this turned out.