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Message: <blockquote data-quote="henry link" data-source="post: 3367299" data-attributes="member: 6806">That does look interesting, Frank. The low slung prism housing and focusing knobs resemble the old Leica 77mm Televid. Shouldn't be too hard to determine the prism type and focusing method by just looking in from the front. Is there a moving prism or a moving focusing lens? As for the eyepiece, it's probably just a matter of determining which design has been copied. I'd be very interested to see phonescoped 60x star-test images (maybe 4-5 rings inside and outside of focus), but I can't tell anything from the goose photos. Remember, the tiny lens on the iPhone restricts the effective scope aperture at 20x to about 38mm. Even the 60x image doesn't really show the true image quality.Henry</blockquote>