Re: ATM Foucault test accuracy

["Ken Hunter" <kb7h@onemain.com>]

Mel...

I have an old, perforated, aluminized mirror sitting around
collecting dust and scratches, I could send it to you as a
guinnea pig in the testing go-round. I have NO IDEA of
it's figure (I got it in a trade a few years back) so I cannot
even guess or bias the testing in any way.

I would like to receive it back at the end of the test along
with all the testing data so that I can do a comparative on it
with my testing methods.

I am unfortunately time limited with numerous other projects
else I'd test it first and then join the testing fun too!

Regards,

Ken Hunter

P.S. I'll need your shipping address.


----- Original Message -----
From: "Mel Bartels" <mbartels@efn.org>
To: "Howard Banich" <hbanich@teleport.com>
Cc: <atm@shore.net>
Sent: Wednesday, June 06, 2001 10:35 AM
Subject: Re: ATM Foucault test accuracy


>
> We can do another round of "mirror mirror on the wall, who judges the
> figure best of all?" if you people wish.  We need 2 mirrors: 1 that is
> closely figured with minimal error, and one that has medium grade
> errors.  That way we can test the hypotheses that "__________ <-fill in
> your test method that you wish to employ> can accurately diagnose small
> and medium grade errors for the purposes of figuring and mirror
> performance rating".
>
> We also need people signed up and a time schedule that is adhered to, so
> that we can each have a couple of days to test, then ship the mirrors onto
> the next person in line.  The time sched is important so that we can work
> around vacations and the like.  You have to pay shipping to the next
> person.
>
> Only at the end will someone perform an interferometric test (hopefully
> two of them).  In the first "mirror mirror on the wall", someone did
> perform the interferometric test as their choosen test.  It is important
> that you send test results to one person, and not discuss them amongst
> yourselves, otherwise you get 'knowledge creep' of the mirrors, which
> invalidates the hypothesis test.
>
> This would be a good chance to see how you stack up with others.  Take the
> mirrors to your local TM group, but caution them to not share with others
> outside of their group knowledge of the mirrors.
>
> Mel Bartels
>
>
>
>