Some nights everything goes wrong. Windows decides to update and reboot. The device drivers stop talking to the devices. Plate solving is inconsistent. The mount takes 5 minutes to settle after a dither. The computer won't download images from the camera.
Everyone knows what I'm talking about and last night was one of those nights! After being ready to start at 7pm I didn't get my first useful sub until 11pm after rebooting computer and mount many times. Luckily the Ptolemy Cluster is bright and easy to capture so this meagre 2 hours of subs seems to have been enough. Luckily I managed to get something out of what was otherwise a disastrous night.
A bigger version is on Astrobin (
https://www.astrobin.com/88qebx/B/) framed to include adjacent dust, but please don't look too closely because there is no deconvolution, no noise reduction and no sharpening, just a stretch and a bit of increased saturation.
Kevin