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From: vinson@linc.cis.upenn.edu (Jack Vinson)
Newsgroups: sci.space.shuttle
Subject: Re: Hubble, again....
Message-ID: <26555@netnews.upenn.edu>
Date: 28 Jun 90 16:15:30 GMT
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Reply-To: vinson@linc.cis.upenn.edu (Jack Vinson)
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In the paper this morning there was a good sized article about this.
It turns out that one of the mirrors was made incorrectly.  Somehow
it is incredibly smooth, but doesn't give the requisite focus.  Of
course NASA is starting an investigation into the cause.  The article
said they weren't sure which of two mirrors were messed up and that
the big limitation would be for the "edge of the universe" experiments
they planned on conducting.  Also, the maintenance to be made in 1993
(earlier if they push it) will involve adding new focussing lenses
between the mirrors and the cameras.  The article did say that Hubble
would be functional, but that earth 'scopes can do about the same
job currently.

Jack