Step 1 Take a photo of the spectrum. |
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Step 2 Insert the photo in the computer and open it with an image processing software (Gimp, Photoshop). Desaturate it by luminosity and convert it to *.fit file format. |
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Step 3 Open the fit file with the FV software (a NASA's HEASARC shoftware) and take the spectral profile. In the next picture, the spectral profiles of KMnO4 solutions are shown. |
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Step 4 Having the spectral profile, we can calculate the absorption and carry out the calculations we want. In the next picture, a standard calibration curve is shown. |