Posts Made By: Fan Tao

I have not seen these but I have heard from others that the optics are good EXCEPT for color. The original versions had a strange tint on the objective coatings, shifting the image color significantly. There is supposed to be an "astronomical" version with more suitable coatings but my guess is that this version may show chromatic abberations that the original coatings hid (the optics appear to have a very low f ratio so are likely exhibit color even if they use special glass).

I'd like to add to this eyepiece thread, hopefully not adding to the mystery. This looks just like an eyepiece I bought circa 1980 from Jerryco (now American Sci & Surplus). It was described as a 28mm Plossl based on a military design (see attached pic with catalog page). It may be hard to see in the pic but the eyepiece is stamped 1 1/8" FL around the rim. It works pretty well for a $25 eyepiece though there were some reflections from the anodized barrel so I added felt inside to take care of that.