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I've had a play with a couple of 8 x 50 type finder scopes to try to get them to work as guiders. There are a couple of problems:
1. The focal length of the objectives on both of those I tried this with both fell just inside the main optical tube. So getting a ToUCam to work required a fair bit of playing around because you are using it as a prime focus camera in effect and so have to get the focal plane of the objective to coincide with the CCD in the camera.
2. The eyepieces these guidescopes have are not any standard size so you can't just pull one out and whack in another eyepiece.
3. The eyepiece assemblies screw away from the main tube but the female thread in the end of the main tube doesn't seem to be compatible in terms of size (diameter) with any of the other bits and pieces I had lying around. So if this is going to work at all, I am going to have to lean on my mate with the lathe to turn up a whole new assembly - perhaps even shorten the optical tube by 25-40 mm to make it possible and try again.
I'd like to her more about your progress and see any pics you have.
Peter
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