Pete K

I believe Nou's scripts have been updated to also build PHD2, but I haven't built with that (I do build kstars/ekos/indi with those scripts). I've been building PHD2 with these instructions: https://github.com/OpenPHDGuiding/phd2/wiki/BuildingPHD2OnLinux

Thanks for the info. I've been using my work-around with Wayland, I may try with X11 just to see how that works. I'm also building with Nou's scripts - build-soft-latest - and it seems to be working well. I found that with the RPi 5, connecting to my USB devices is much more reliable. With the RPi 4, I often had to restart kstars/ekos and cycle the devices to get them all to connect. I rarely have that problem with the RPi 5. My devices are Nikon D7500, iOptron GEM28, ZWO ASI120MM-mini and a GPS dongle (via gpsd).

Have you resolved the issue with the window controls? I have that also, but I've found a work-around. If I use the file manager to open a .fits file with kstars, it opens kstars with the window controls. The fits viewer lacks the window controls, but I just use the File: Exit menu to close the .fits file viewer and use kstars from that point. Very weird.

I had my Nikon D7500 modified with the Full Spectrum conversion by AstroGear (https://www.astrogear.net/). I've had it a few months and so far I've been really happy with it. Nebula images after the mod show much more H-alpha (red). As was mentioned by @Elp, for normal daytime photography you'll have to set a custom white balance (or correct the WB in post processing). I use a Hoya UV-IR cut filter to prevent the IR in daytime photography from causing blurring.