7144Re: Air-spaced versus oil-spaced lens elements?
- Jan 21 2:28 PMHi Curt -thanks for taking the time to respond, I appreciate it. Will
check out the AP group.
--- In William-Optics@yahoogroups.com, Kurt Friedrich
> My suggestion is to join the Yahoo Astro-Physics group
> and then search their message archieves.
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