|
Well a bit of experimentation will have come at the answer. I set up my camera and pointed the telescope through an open window and at a bridge 8km away. Then I held up a white card and measured the distance from the card to the optics at min and max mirror position. I was able to achieve focus between a distance of 38mm and 65mm.
So that's it then. Going to buy a set of t-ring spacers. Now... How the hell does the ST-237 work at just 16mm? Black magic?
|