Louis Scheffer wrote in
:


This is not true, except for the very first batch of instruments, all
long since replaced. There are no additional lenses in any of the
insruments designed since the flaw was uncovered.
In all the new instrucments, since they need one or more
mirrors to direct the light within their own optics, they just need to
make one or more of these mirrors not quite flat. This restores
diffraction limited optical performance without adding any new
elements.



But since not flat is harder to make than flat. Is it still as good
as it could have been if they did the job correctly the first time.
You may think so. But I don't. Having worked at NASA and for Uncle some
26 years the one thing I learned is the PR is usually more optimisic
than what reality is.


David A. Scott
--
My Crypto code
http://cryptography.org/cgi-bin/cryp...c/scott19u.zip
http://cryptography.org/cgi-bin/cryp...c/scott16u.zip
http://www.jim.com/jamesd/Kong/scott19u.zip old version
My Compression code http://bijective.dogma.net/
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