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Suggestions for a short light path diagonal. Hi all, does anyone have any suggestions for a 1.25” 90 degree star diagonal or prism with a short optical light path? I have calculated that I need less than 70mm (including eye piece holder) but the shorter the better, to give some focus head room. All my current diagonals, including WO and SW 45 degree prisms are far too long. I am already using a zero length 1.25” adapter in the draw tube. Google is not finding the information I need. Thanks in advance.