I bought this pair for $10 today but I can't find any information about them searching or at CN. There is a listing for the brand but not for this extra wide field (578ft @ 1000) The eyepieces are huge! and I think the prisms are as well.
Does anyone know more about them? I will try stargazing tonight with them if it's clear up in the mountains.
Hi
There were a number of Japanese built very wide angle porros sold in the 60s and 70s, under many names.
The best way to trace the glass is via the JGB number, typically on the "Passed" sticker issued by that group.
A list of suppliers is here: http://home.europa.com/~telscope/jbcode.txt
Fan Tao's web site, which has been recovered and is mentioned on another thread on this forum, may have more details on your or a similar glass.
Thanks etudiant