Why does Schuster's method for focusing a spectrometer work?

Subject: Why does Schuster's method for focusing a spectrometer work?

Date: Tue Jan 20 13:54:53 2004
Posted by Arlene
Grade level: undergrad School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Astronomy
ID: 1074628493.As

Message:


I'm currently doing an experiment involving a spectrometer, a sodium light 
source and a diffraction grating. I set up the spectrometer using 'Schuster's 
Method', i.e. finding the position of minimum deviation etc, but just can't 
figure out how this works. Is the light being diffracted and with each focus 
it's being diffracted less? I just don't get it...

Re: Why does Schuster's method for focusing a spectrometer work?

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