Just thinking ahead. I couldn't get enough in-travel on my standard Bintel Crayford 2" focuser for my webcam (Logitech Quickcam Pro 4000) mounted on an adapter (photos attached - apologies out of focus). The adpater is screwed up tight - I don't think there is a way to get the adapter further into the webcam - there are two options where it is coming to a halt - the thread or the inner flange against the "screw in" tube in the webcam. The external flange sits about a mm off the webcam body.
I've more testing to do in daylight, when the rain stops and when I have time, but am thinking of options now.
One is to "butcher" the adapter by removing the flange that stops the adapter going deeper into the 2"-->1.25" adapter I use in the focuser (std with the focuser - see photo), but I'd prefer not to. The webcam focuses in the barlow and the flange obviously locates the camera in the same position relative to the barlow/focuser (within all the sloppy tolerances) each time, so I'd rather keep it.
I've searched the net and the forum for the second option which I really want, but cannot find it. To describe:- The 2"-->1.25" adapter stands the webcam some 10mm above the focuser. If I could get a lower profile adapter? But, even better, can I make up a 2"--1.25" adapter that will sit in the top of the focuser. I'm thinking of an adapter with a 1.25" hole which is a snug fit for my webcam adapter, that sits under the upper lip of the focuser (maybe with a couple of hooks up over the edge to stop the whole lot falling onto the secondary in the tube!) and at the right depth so the webcam is right up to where it almost touches the top of the focuser, yet the adapter is still held tight by the screw/brass ring at the top of the focuser. I will have gained more than a cm of in-travel.
Does such an adapter exist for sale, or has anyone made one and can share experience?
Many thanks in advance - Eric
