Posted by Mark K. Stein (12.220.210.25) on August 10, 2003 at 21:50:58:
In Reply to: Re: Keim Precision Optical Co. posted by Curtis Croulet on August 10, 2003 at 10:00:06:
: Keim is a new name to me, but I know that there were several small operations in the L.A. area making mirrors and even entire scopes. An old friend still has a superb 8-inch from one of these oddball sources. Some of these makers threw around rather extreme claims of optical perfection. For every maker that could boast of 1/10 wave mirrors there was another that would claim 1/20 or even 1/40 wave mirrors. boy you've got that right-a 1/40th wave mirror on pyrex,that will vary more than 1/30th when you take it outside!