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Building a Custom Focus Control System

This video, requested by some of my viewers, shows how I built a custom remote focus control setup for three different astrophotography rigs. I have used the Sky-Watcher Autofocus Kit and the Hitec Astro DCFocus Controller in all of these rigs, but alternatives can of course be used. I use low cost GT2 pulleys and belts, Arca Swiss clamps and plates and some home made metal blocks/plates to fashion these setups, and they have served me well over the last few years. You may want to follow my steps exactly, or perhaps you need to do something similar for a different rig, and my video will simply give you some ideas on how to go about it. Either way, I hope you find it useful. Below are links to some of the key parts I used: Sky-Watcher Auto Focuser Available from First Light Optics, Rother Valley Optics, Widescreen Centre and other Sky-Watcher distributors. Cost ~£57 HitecAstro DCFocus V2 (DC focus motor Controller) First Light Optics, Tring Astro, Cost £79 (I actually used the original version, but I suggest using the V2 version now available) Canon Lens Setup =============== GT2 6mm Pulley, 40 teeth https://www.amazon.co.uk/gp/product/B... GT2 Closed Timing Belt, 350mm https://www.amazon.co.uk/gp/product/B... Sky-Watcher Quattro 8CF Setup ========================= Thumb Screw, M6 x 20 https://www.amazon.co.uk/gp/product/B... GT2 6mm Pulley, 60 teeth https://www.amazon.co.uk/gp/product/B... GT2 Closed Timing Belt, 228mm https://www.amazon.co.uk/gp/product/B... Also, please do check out my website at www.martinsastrophotography.com for information on my equipment, tutorials, free sky calendars, handy tools, my image gallery and more. Clear Skies! ----------------- Chapters in this Video ------------------------- 00:00 - Focus Control System Introduction 07:51 - Camera Lens Focus Control Systems 26:57 - Newtonian Focus Control System 34:48 - Wrap-Up