[Astroboy33 (Steve)]

I am a relative newcomer to Astrophotography. I have a F4 200mm Skywatcher Quattro set up in a roll off top observatory and we fortunately live in a dark site. Focussing by looking at the screen and then climbing to the top of the tube to try to adjust is becoming a bit wearisome. What systems would you recommend to at least allow me to sit at my computer and adjust the focus whilst looking at the screen. Thanks