I suggest you download and install FireCapture 2.7.10 from FireCapture.de and test it out!
Astroberry installations come with FC already, and it runs well on RPi 4 4GB models. So I use KStars/Ekos/Indi initially for PA etc, then ‘disconnect’ the main camera in the appropriate Indi tab, minimise all KStars windows and then open FC. I run with 1FPS preview screen during capture to keep the CPU activity down, and look at the CPU activity and memory occupancy graphs just to be certain. I have found a bug which about half the time makes some dialogue windows seem unresponsive. Everything works, but the point of cursor focus and the object being targeted are horizontally displaced from each other [there are some example images on another thread I started].

Read More...