[ATM] Re: Ball bearing for triangles

[=?Windows-1252?Q?Rapha=EBl_GUINAMARD?= <rguinamard@infonie.fr>]

Thanks for your interesting reply Tom,

> How do you cool your mirror?  Passive ventilation?  Fans?  Fans on both
> sides?

I don't cool my mirror. I think I'm going to put fans on both sides,
specially if the test I'm going to do shows my spherical aberation problem
comes from a temp difference in the 2 faces of mymirror
The test I'm going to do is to mount the scope WITHOUT removing my primary
dust cover, wait 2-3 hours that the miror is in total equilibrium (because
when the miror isn't in equilibrium, it could
also lead to spherical aberation: see Suiter's book), then remove the dust
cover and make quickly a star test to see if the spherical aberration is
there.

Tom I can't acess the adress you mentionned:
http://celt.ucolick.org/reports/report16_mirrorsegsupprt_mar01/report16_mirrorsegsupprt_mar01.htm#figures
Is there a problem with the link?

About your A and B concept, I've put some picture of my piano wire supportin
the atm site:
http://www.atmlist.net/contrib/rguinamard-at-infonie-dot-fr/600f3.3/montage%20interne%20final%201.JPG
http://www.atmlist.net/contrib/rguinamard-at-infonie-dot-fr/600f3.3/avant%20montage%202.JPG
Thanks for your reply

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