Re: [ATM] Not tde or tue, important oblate spheroid, ellipsoid

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

Jerry wrote:
> P. S.   I will bet that within 6 weeks, here on this list someone
> will post concerning their mirror and a link to a picture of a
> mirror that is terribly oblate. They will ask what they have to do
> to fix that shape, that they have been doing like they were told or
> read, using a short center over center stroke to make a sphere and
> it is not getting better. They will say that after some number of
> hours it might be getting worse.

This is why I posted my oblate sphere page.  This question comes up
regularly and I got tired of answering it.

I'll include the link again in case some haven't seen it:
http://bi-staff.beckman.uiuc.edu/~melockwo/mirror_making/oblate/oblate.html

> It will make you a better ATM if you if you communicate what you
> know to someone else. You will have to think of everything you have
> done right and everything you have done wrong.

An excellent point.  If one communicates it on the list you will also 
get sanity-checked by everyone else on the list, which will further 
refine the knowledge.

	Mike Lockwood


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