Hello AstroRunner, git-built your Bahtinov build to test on a RP4-4g. I used my Canon 60D and RedCat 51, as it is already setup. Additionally I employed Hubble's artificial star flashlight.
Wanted to test this software change out - expected outcome to get better focus with the ray trace for feedback on accuracy.
1. Used the Canon rear screen live view to get close.
2. Used Ekos's live view to check
3.Tried numerous exposure times to get the star flare - didn't see any flare up to 30 second exposure. Even maxed out ISO.

Left all settings at default. Do you have any suggestions?

I will try this again tomorrow with my 183mmPro.

Thank you for you efforts; perfect app

for this OTA/camera