I've been running a 350d with shutter release on serial port, Moonlite compatible Arduino based focuser (SGLPro) with a stepper driving the lens in manual mode with a belt. It all sits on a Losmandy GM-8 (Gemini 1). Running Ekos from a RPi3 on Ubuntu Mate which does everything - camera control, focusing, mount control, plate solves, etc. Wiring is in dire need of sorting out...!

With an 85mm lens I have taken some images lately from here in the UK which you're welcome to use with credits - see:

www.chromosphere.co.uk/2017/12/18/widefi...d-spaghetti-nebulae/
www.chromosphere.co.uk/2017/12/15/belt-sword-loop/
www.chromosphere.co.uk/2017/11/29/widefi...soul-double-cluster/

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