Re: [ATM] Ghosts in the Coulter

["Vladimir Galogaza" <vladimir.galogaza1@zg.t-com.hr>]

Brian,

>Temperature causing warping of mirrors/mounts?

This is very general statement. We usually want detailed explanation.
Stephen mentioned that
several sharply defined ghosts can not be easily, if at all,
explained by  warping of the mirror. He even simulated
the problem by reversing it. He postulated
finished image with ghosts and calculated what kind of
warping can cause it. His result (and my intuition)
tells me that it will be very elaborate warping required for this.
Not very likely in real mirror(s).
Various usual aberrations cause image distortions  but not multiple
well defined images of very different intensities.
This is why I was asking for ghost photos (with no response?).
If mirror cooling will remove ghosts, than ghosts should disapear
gradualy and continuosly. Following  and describing in details the behaviour 
of
ghosts during cooling time will bring more light to what is possible cause.
Instead we have only this:
>"I opened the tube for another 30 minutes and the ghost went away."

Regards
Vladimir.


Regards
Vladimir

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