[ATM] Sling study 2nd week better results with sling.

[polaraligned <polaraligned@optonline.net>]

So I would think that using an aluminum sling would be a bad
thing because the mirror will have a much harder time
"settling in".  Here is a commercial cell that uses a metal sling:

http://www.starstructuretelescopes.com/new_web_site_sst_007.htm

The guy that is going to make my 32" mirror will be using a sling just like
this when he tests the mirror.  I am nervous about him using it.
What do you think?

Scott



> From: Dale Eason <atmpob@yahoo.com>
> Subject: [ATM] Sling study 2nd week better results with sling.
> To: atm@atmlist.net
> Message-ID: <20061209225342.38989.qmail@web50604.mail.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> I let it set on the sling for a week and then pushed
> up on the bottom a few times and let it settle back.
>
> Mel had posted once about putting on the sling a
> couple of times to relieve the stress.
>
> It worked!
>
> The astig is down to 1/5 wave on the wavefront and
> still the mirror is pointing horizontal.  Trefoil and
> astig combined are 1/4 wave PV on the wavefront.
>
> I will update my report later.
>
> Dale Eason
>
>
>
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