Tonight I was imaging M20 with my Infinity Colour camera. I noticed a line wandering - yes wandering - from the right of the screen to the left. The line was not straight but moved irregularly although the general direction remained constant. With each exposure the line grew longer.
Any thoughts about what might be causing this? I restarted the program, rebooted the computer, checked all connections but each time the line came back. Then two lines appeared and I gave in.
An addition thought after a night's sleep: it could be something as simple as internal reelection caused by a nearby, over bright street light.
I'll give it another try tonight.