alastroct Second, and perhaps related, I have had periodic issues when I get pop-up error messages in the ASIAIR app saying "U Disk Unplugged: U Disk has been unplugged
Since you often your USB memory stick, you may want to check if your NGC 281 images are saved to the microSD card.
The U Disk alerts are exactly that: ASIAIR lost connection on USB (bus) to the USB memory stick. Try moving the USB stick to a different USB port on ASIAIR (if it is USB 3 stick, plug it into USB 3 port (blue plastic insert) of the ASIAIR Pro).
If you continue to get disconnect messages, either the USB ports on the ASIAIR are loose (this is why no engineer would mount the ASIAIR on anything that moves during the night, unless you add some strain relief; nether the standard USB connectors nor the 5.5mm/2.1mm axial connectors are meant to be used in non-stationary situations), or the USB connector on the USB stick is flaky (easy to test with a second USB stick).
Higher end products use screw lock USB connectors, like this one
https://www.usbgear.com/SC-U2MAB.html
In lieu of screws, you can use gaffer tape to secure the memory stick (and other USB connectors) to the ASIAIR.
Chen
