On Mar 24, 1:25 pm, Rich <rander3...@gmail.com> wrote:

**************

I readily admit that I don't really know much about optics (although I
know what I like), but I do know that Harry Siebert

http://www.siebertoptics.com/

makes eyepieces on his kitchen table (or at least, he used to make
them there), and that he uses a lot of glass from Edmund.

Harry is a very friendly guy and can talk your ear off about his
eyepieces, and I suspect that he would be more than happy to give you
his opinion about this glass you are talking about.

\Paul A