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Binoscope
Of course you can look through it Erick, it is a sociable telescope.
Initial collimation is a three-step affair:
1. collimate one side
2. collimate the other side
3. tweak the left-hand mirror with those knobs to merge the images at the eyepiece. It only takes a tiny, tiny adjustment. It is not such a ***** once you have lived with it for a bit.
Then as you surmise, you focus each side separately & rotate the UTAs to get the right interpupillary distance. Which is indeed why helical focusers can work well on these scopes, since they focus without changing the IPD & remove one iteration from the process. I nearly went down this route but in the end just used the most easily available bits (I had half the bits already since I cannibalized a 10" monocular to build it).
Phil
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