So a few days ago this eyepiece popped up, and I was curious about what it is worth and the quility. The design is a Köhler Panoptic wich is not from televue. It is a 17mm panoptic wich seems pretty old. On the image it states 68°, but in the design description on the same website it states about only 30°. Anyone owns this eyepiece or knows anything about it?
Here is a site with some information wich you can find in the 20th century part. Below are some pictures of the eyepiece and of the design.
Edited by Nebula27, 12 January 2019 - 04:35 AM.