Hi Michael.
I posted something about 6 months ago with unexplained goings on in the sky and got very little in the way of realistic possibilities and yet I didn't believe it was possible that I was the only one to have ever come across strange things given how many of us are photographing the sky.
Yours are stranger than mine although mine was a single object acting strange. The part that interests me with both yours and mine is that they are non linear as a plane, satellite or meteor would be. With both yours and mine, I discounted anything super close like a bug as we are at infinite focus and anything that close ( in my case though a 1250mm scope ) would if anything only appear as a faint shadow. In one of your long trails you can see brighter sections in the trails which are not eveny spaced as a flashing light from an aircraft would be. Yours are moving quite fast as they cover a large portion of your feild of veiw over 8 seconds. Mine took a total of nearly 8 minutes to go through my very small feild of view.
After such a lengthy post you'd think I'd have some sort of solution for you but I don't. I'm sure someone does though and I'm looking forward to seeing someone post who does.
A cool capture Michael
