Re: Re[4]: ATM 8" f3.8 -- Worthy project?

[Hugues_Laroche@ses-astra.com]

Hello Dwight,

(about lighting the wire laterally with for ex. a laser)

> Using it this way wouldn't work. There wouldn't be enough
>contrast between the light that was blocked by the wire
>and all of the light that went around it.

OK, I should have said that I was thinking about ligthing the wire
at one place with a small surrounding screen, and use the
the wire to block the light a few mm further. Here is an attempt
to describe with a CAD showing things transversaly, from
the direction the laser beam comes...


               wire
                |
   Eye          |  <-- blocking part
                |
            ----|           ------> to the mirror
            |   |
 screen --> |   |  <-- lit part
            |   |

So the testing would be very slightly off-axis. On fast mirrors
may that be a problem?

Hugues