Can confirm. Here's a 20 minute exposure of Orion + moonlight over the Grand Muveran I shot in the village a couple of years ago: https://leejo.github.io/images/2018/large_format/36_muveran_... # this is shot on 4x5 film, and unfortunately Fuji don't make Acros in this size anymore (fortunately I stocked up on it).
Devleoped in my sink using an SP-445 tank. B&W chemistry is pretty straightforward. I do prints (check my site for contact details). There's a couple more examples of 4x5 work on my Instagram (ha!) haven't got much of it up on my site yet.
Oh I know, but your shots specifically are lovely! I will check it out :) I imagined you did it at home... have wanted to do the same but haven’t had space, so use the mail-in services which are not bad.