Mystery

Made a mad dash out to Mono Lake a couple of weekends ago. It's a 4 hour drive for me, so my friend and I left after dinner and made it around midnight. Shot till sunrise then drove home. . I think the temperature was about 22° F (~ -5°C) so we froze our toes and fingers off. I have a star tracker but it was too cold for me to pull it out and fiddle with polar alignment and the like, so I just shot multiple frames for the sky and then stacked them in sequator for noise reduction and blended with a long exposure foreground with some very low level lighting.