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Diffraction Grating Micrometer

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Posted by Thad Robosson/">Thad Robosson on November 5, 1998 09:14:34 UTC

Hey Guys,

I'm into double stars, and have heard in passing about diffraction grating micrometers. (DGM) I know WHAT they are, but do not understand the concept or how they are use in relation to actually measuring a system. Does anyone have something that would be a fairly concise description of it's use and how to determine the grating widths etc.


Thad Robosson Phx, Az

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