Re: Top Dogs and Dead Dogs

From: Jim Van Nuland ^lt;jvn_at_No-Spam>
Date: Sat Oct 29 2005 - 01:39:13 PDT

Sander Pool wrote:
>
>
> Interesting point Jim. I have a 26mm Meade 4000 and the lens is about 1"
> deep into the eyepiece. The eye relief is about 0 so I have to take my
> glasses off. If it was shorter on the top I wouldn't have to.

  I'm amazed at some of the foolishness. The Pretoria 26mm ocular was
described in Telescope-Making magazine, and considerable mention was
made of the long eye relief. Then some cell designer at (or for)
University Optics put an eye cup that took away about 2/3 of the eye
relief! Didn't he read the article??

  I see this constantly. GRRRRRRRRRR!

  The finder on my scope came with an impossible eyepiece. Fortunately
it was a separate 0.925 that could simply be pulled out. I disassembled
the optics from it, and had a machinist friend cut off the eye cup. End
of problem. I ought to do that with the Pretoria. But it's a lot
easier to tear into a cheap one.

-- 
Jim Van Nuland, San Jose (California) Astronomical Association
<a href="http://www.svpal.org/~jvn/ ">JVN's web site</a>
Received on Sat Oct 29 01:43:25 2005

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