I have a 150 mm 1200mm f/l refractor and I found it a pain capturing stuff overhead as I would be on my hands and knees looking at the camera and I prefer / like a reflector because the camera is positioned better...for me.
But maybe say an 80mm refractor with say 400 mm f/l would be OK...for me.
I used a 80 mm guide scope and it was OK.
But for the novice my main advice would be get started. I see folk asking this or that but the key is to remember whatever you buy you will have good points and bad points and you will probably want a bigger better one...unless you buy something like Hubble first up...but even then you need the space to put it.
Alex
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