Stub Mandrel Posted February 15, 2016 Share Posted February 15, 2016 OK, I have a proper photographically produced diffraction grating 4" by 1" and 1000 l/mm. My assumption is that I can use this with a webcam and a slit to make a 'proper' spectroscope, but I'd rather try and do something more sophisticated than the simple CD spectroscopes on line. I also have a few surface silvered mirrors (from old laser printers) that could come in handy and a well-equipped workshop. But what I don't have is a straightforward 'plan' for making a working spectroscope or any tips. For example, I'm sure we used two opposed razor blades to make a slit when I was in school - is that the best way, and how narrow a slit should I aim for? What's the best configuration of slit, grating and detector? Link to comment Share on other sites More sharing options...
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