Re: [APML] Measuring microns (was Horsehead)

["Mike Cook, AF9Y" <mwcook@concentric.net>]

I've used a cheap CCD video camera on a microscope and counted
pixels after a video capture to the computer.  You need to first
capture the edge of a millimeter ruler to calibrate the CCD FOV.

Mike Cook

>From:           	Chris1011@aol.com
>
> How do you measure star diameters on negatives? I tried with a measuring 
> microscope, but could not get consistent results. CCDs are easier, of course, 
> but the  resolution of today's available pixels does not allow you to 
> accurately measure a star diameter less than 12 microns.
> 
> Roland Christen
> 



Mike Cook, AF9Y
http://www.webcom.com/af9y
mwcook@cris.com




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