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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Blish prism
From: Paul Hirose
Date: 2000 Jul 13, 1:10 AM
From: Paul Hirose
Date: 2000 Jul 13, 1:10 AM
Here in the U.S., Edmund Scientific has been selling optics (surplus and new) to experimenters since the 1940s. I'm pretty sure I've seen in their catalog a prism of the type George Huxtable mentioned, i.e., turns the line of sight 180 degrees and offsets it laterally some considerable distance. They surely have a Web site, though I don't know the URL. A search should turn it up easily, though.
