Just as an update. Much thanks to Scott Denning who showed me how this is possible. I am now running Astroberry on the RPI but not running kstars there. Kstars is running on my MacBook Pro and remote INDI to the RPI which is connected via USB..
I have the very latest version I downloaded about 2 week ago. As an update I got everything working running on the RPI4. Now I just need EKOS to do lens focus for the Sony. It is possible to remote both focus and zoom on the Sony.
Hi Kurt, sounds like your having some good success with it all so far. I’m still trying to get the later version to recognise my Zwo camera. Probably some setting or driver issue that I’m overlooking. I can still run 3.4.3 so I’m not totally without a working programme.
I thought I would follow up with what I have learned. I now use the V4L2 which gives the iGuide camera and makes me fowl better that using iPolar. Set the detector width to 1280 pixels in the INDI panel and set the pixel size to 3.75 as it defaults to 640 and 5.6. You have to do this every time. EKOS won't let you set the integration time longer than 0.5 but PHD2 will allow you to set it up to 3.5 seconds.
Because you need to set this every time you start EKOS you can change the guid telescope to 5.6/3.75*120 = 179.2mm which it will remember. This gives the same IFOV are 3.75 @ 120. Then you only need to change the 640 to 1280.