I've never really done a true composite before, but I'd had the idea of taking the stars through a window for a while. The problem I had was finding a big enough window, that I could access and that the lights were turned off at night for. And unfortunately, I'm still looking, but in the mean time, here's a composite (using only my own images) of what I'm aiming for sometime in the future.
March 27, 2018
11mm · f/4 · 1/200 · ISO 1250