Re: ATM Would this design work...

["Benoit Schillings" <benoit@be.com>]

>
>It seems to me that the problem is that any two stars which would have 
been 40
>um in diameter and, say, 900 um apart on a photographic plate using 
the mirror
>alone, would be 13 um in diameter but only 300 um apart if the lens 
was used. 
>Thus if you enlarged the plate using the lens to match that without, 
they
>would be identical (except that the lens might add other abberations 
of its own).


If resolution is the only goal, I agree with you... but I was thinking 
of more
specialised work, like drift scan imaging, or ccd surveys... in that 
case the resolution
of the "plate/detector" is limited by the pixel size...

With some typical ccd sensor with 18 microns pixels, 25 microns stars 
are
really not a problem.


                -- Benoit