While reading in the bathroom on Sat, 25 Sep 2004 18:40:57 +0200, I
saw that "Guillaume Dargaud" had written:

Taking into account the cold...

Does glass shrink in extreme cold? Would a lens shrink at the same
rate as the metal tube? Does glass become brittle the way plastic
does in extreme cold? How much plastic is going to be in your setup?
At what temp do any adhesives in your setup fail? At what temp can you
expect trouble from the lubricant? I can think of dozens of similar
questions to ask, that no one in North America normally has to
consider but that you do.

In short, for your needs, I very strongly doubt you're going to get a
dependable instrument in your stated price range.

--------------
Beady's Corollary to Occam's Razor: "The likeliest explanation of any phenomenon is almost always the most boring one imaginable."


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