Re: [ATM] Ball bearing for triangles,spherical aberration caused by thermal gradient in themirror:theresults...(long)

[Raphaël GUINAMARD <rguinamard@infonie.fr>]

Hi Vladimir(s)
Yes it seems I have also a TE on my 600 mm.
I'm actually making outer mask to quantify how big it is.
The first test I've made (so it needs confirmation) :
A 575 mm internal diam mask still show the turned edge.
With a 540 mm mask, the TE "seems" to disapear in the star test but it seems
that the spherical
aberation is still there (but I have to recheck because I did only 1 test)
I'm actually making a 520 and a 560mm mask to precise the things
Thanks for your reply


----- Original Message ----- 
From: "Vladimir Galogaza" <vladimir.galogaza@zg.htnet.hr>
To: "ATM List" <atm@atmlist.net>
Sent: Thursday, January 06, 2005 1:13 PM
Subject: Re: [ATM] Ball bearing for triangles,spherical aberration caused by
thermal gradient in the mirror:theresults...(long)


> Raphael,
>
> Vladimir Sacek wrote:
> >You may want to check out the edge quality. TE
> >can make spherical aberration look worse and, to
> >unsuspecting eyes, or in compromised conditions,
> >can even "imitate" s.a.
>
> Would the edge masking and repeating the star test answer immediately if
> this is true?
>
> Vladimir (another one).
>
>
>
>
> -- 
> No virus found in this outgoing message.
> Checked by AVG Anti-Virus.
> Version: 7.0.296 / Virus Database: 265.6.8 - Release Date: 3.1.2005
>
>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/

_______________________________________________
ATM mailing list http://www.atmlist.net/