This morning about 2am, I work up - and looked outside, it was clear so I thought I'd get a couple of hours photos of the northern sky (30 sec eposures). I set up the camera and timer and went back to sleep. About 5am I work again and the fog was horrible. I retrieved my camera and though it would be a total failure. Turns out it was quite interesting: watching the clouds go by as if in a Star Trek warp drive.
Clouds flying by as if in a time warp
Building the star trails using StarStaX 2 hours of 30 sec exposures.