[wplug] OT: was FreeDOS, now digitizers

[Nathan Marcus]

Did ya try and run a search on Globalspec?  Might be a better
specialty engine for you.  http://www.globalspec.com/  Good luck with
that hardware, hehe

On 5/17/05, Michael Semcheski <lists at immuneit.com> wrote:
> Chris Ott wrote:
> >> Anyone know of any good microscope-plotting systems, precise to the
> >> micron?  Must run on newer hardware :)
> 
> > You'll get 27,200 hits, many of which are selling microscopes that work
> > with Windows XP (blecch) and have USB connections. They range in price
> > from $500 to $3000. Most of them include image processing software and I
> > noticed one or two that will process moving images.
> 
> What we are looking to replace, actually, is the MD2 system from
> Minnesota Datametrics.  Its a bit different than a microscope with a
> digital camera.
> 
> The following is not meant to be 'I'm right, you're wrong', but just for
> the interested reader.
> 
> The stage of the microscope is attached to a mechanical device which
> precisely measures its position.  Crosshairs are shown in the
> microscope.  When the scientist presses a button, the position of the
> stage (relative to the crosshairs) is fed into the computer as x and y
> coordinates.
> 
> If you do a google search for 'minnesota datametrics md2 system', the
> results are all published neuroscience and psychiatry papers.  Minnesota
> Datametrics has since changed their name (and their product line).
> 
> The reason for this is used is that the field of the microscope is much
> smaller than the actual slide.  If you were to take a picture of the
> slide with a digital camera attached to the microscope, you'd get a
> fraction of the slide.  To digitize the whole slide, you'd need to take
> hundreds of pictures, then align them all.  Sort of like putting a
> jigsaw puzzle together.  It would also leave you with lots of
> information you don't need -- we don't need high detail photos, we just
> want to have precise knowledge of where certain indicators appear.
> 
> Mike
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