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We have been using low-cost spectrographs called shoebox spectrographs for a few years. In the process of our study, we decided to make a spectrograph using the same basic optical design but with quality optical parts. This new spectrograph was found to be easily aligned, very accurate (~ 0.2 Angstrom accuracy), and enables intermediate and advanced students to study molecular spectral lines. We will present theory of operation as well as accurate photographs of molecular spectra.

From a Low Cost Spectrograph to a High Resolution Spectrograph