Hi Bernd,
I recently switched to Mele 3Q www.amazon.de/gp/product/B09XPTKQRW/ref=...01_s00?ie=UTF8&psc=1, which is much faster than the Raspi. I got it for 250€.

I installed Ubuntu 22.04 and installed Kstars / Indi via the ppa from Jasem (indilib.org/get-indi.html). Always up to date, and so far no problems. I also run FC on it, much faster than Raspi.

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