Byrdsfan1948 This seems to be a very random failure that can occur at various times.
Probably momentary USB/power disconnect.
It may even become worse as the weather gets colder. If the problem occurs more often when any connector is facing ground (i.e., maximum gravitational pull on the connector), it is another indication that it is a momentary disconnect problem. Check your log, and place the mount in the positions where you lose connection, and you may be able to spot the offending connectors that way.
As an engineering precaution, lock down all connectors. The more expensive SBIG and QHY cameras have connectors with locks (the screw-down 5.5./2.1 mm connector for power, for example).
The connectors use by astronomy hobbyists are not designed to be moved. USB Type A and Type B connectors are designed to plug in horizontally, on a stationary device, at room temperature.
Make sure all wires are strain relieved. The connectors themselves must not have any movement as your cables moves through the night.
Use copious amounts of velcro to tape the USB and power cables down so that the connectors themselves see no change in stress when the telescope moves, and then use Gaffer tape to further tape down each USB connector to its surrounding.
Medical cohesive bandage might work better than velcro tape, and you may already have them in your medicine cabinet -- it is the gauze like brown flexible material with micro thorns that stick to one another, that doctor offices use to tape something down to your body. Just check Amazon for "cohesive bandage." With Gaffer tape, make sure they are manufactured in USA; some of the cheap Amazon ones leave residue (the opposite of why Gaffers use this kind of tape), do not adhere well, and are harder to slice -- you have been warned :-).
In your case, the connectors may be mount related (both sides of the cable), but it can also be a USB glitch elsewhere too. Strapping all equipment ground together is another practice that this current generation of astronomy hobbyists who are not electricians seem to ignore too. I use two power supplies (one is an uninterruptible supply for my mount to avoid backdrive) and their grounds are heavily strapped together, so that the USB ground return won't have to carry any current.
This is an example of how I strain relieve my connectors (3D printed strain relief instead of velcro):
The 3-D printed ring clamps down on the body of the camera. Cables are pass through a clamp on the ring (right side in photo). This way, there is no movement of the cables on the near side of the ring, i.e.,, no change in stress on the connectors through the night. The USB-3 Type B connector further has a small aluminum bracket gluded to it, and additionally Gaffer taped and with an additional cable tie. The bracket is then bolted to the 3-D ring.
Speaking of which, avoid using the USB hub in the camera to connect to your mount (or anything else). The quality of the USB-type A connectors on some of ZWO products are really poor. Buy a real USB hub.
Chen
