This is a higher level of my primary setup: the 90kg ATM EQ fork mount with 17kg 10" F/5 Newtonian with accessories.
I wrote it's a higher level, because this setup never fully satisfied me till now. I used the Astroberry with its Ekos and PHD2. Guiding offered by the PHD2 very rarely was below 1" total RMS, usually it was nearly 2". Recently I bought the ASIair Plus and after obtaining decent guiding with Celestron CGX (around 0.8") I decided to give my ATM fork mount another chance. The result is outstanding, if we take into account that it's a fully home-made mount built from scratch: nearly all the session the total RMS was below 0.8", very often it was around 0.65" and sometimes reached really low value like in the picture below. I think that the harmonic gearing used for the RA axis just showed its class. The question is why does the PHD2 run on the same Raspberry Pi 4 (my Astroberry has 8GB RAM) cannot do the same as the ASIair Plus?
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