patdut wrote: You don't need the hand controller. For the CEM60 you have a RS232 input. I guess it exists also on CEM25. To connect PC or RPi or any computer having a USB port I use this kind of cable: www.amazon.fr/gp/product/B06VWWCPQQ/ref=...05_s00?ie=UTF8&psc=1
tkottary wrote: Interesting . I haven't seen any other serial port apart from the one in HandController. I'll check again.
patdut wrote: The CEM60 is a best value for the price. I use it in semi nomad way. I mean I get it from house to backyard each time I need or on the field. The weight of the mount (12kg) instead of the 17kg of my previous one is a plus and make it easy to handle. As I said I use it with the triptych Kstars/Ekos/INDI running indifferently on a PC or a Tinkerboard.
As fmozza I rarely use the handset.
The polar finder is enough accurate to set a polar alignment close to few arcs minute. I complete the manual polar align with the Ekos polar align function.
Guiding is really accurate from 0,15 arcsec to 0,5 arcsec RMS depending of the position of the telescope and the turbulence conditions.
The only thing that is a bit disturbing at the beginning is the clutch system (not really clutch) which is a engage/disengage system. But after a while it is a really good thing. It allows to do precise balance of the setup as it is free of friction when disengaged. Maybe the design of the mount helps a lot too.
A great plus too is the inboard USB hub that allows to minimize the number of wires from PC to mount.
As I am in a relatively protected zone from light pollution I have In my project to build a fixed observatory. And I think I will put a CEM120 inside it.