I have one of the late Steve Evans’ stepper motor-driven rotating shutters from AWR Technology. He used this system with Canon T70 cameras – and in conjunction with video timings from Andrew Elliott and Tim Haymes et al – determined the solar system orbits of Geminids and other major showers. It’s much easier these days using video cameras and the latest software!
I’ve just tested the control box, stepper motor and cutaway shutter and it burst into life. The AWR Technology website describes this equipment, which might differ slightly from the items in my care.
You are welcome to have them for your ‘olde fashioned’ meteor work. I can bring the items to Stirling this weekend.