I thought the original mirror for the Hubble was ground incorrectly, and
that it had to be repaired with corrective lenses to compensate. I
heard this while working for a (nameless) client who temporarily feared
that the Mirror error was caused by their computers. Later it was
discovered that the error was due to other causes.
-- Harvey Newstrom <mailto:harv@gate.net> PGP 5.5 Fingerprint: F746 7A20 EB7D 27BA 80A5 4473 D8E1 6A54 1EB0 56F7 PGP Public Key available from <ldap://certserver.pgp.com>