Spectra Scope

This is a printable light spectrum analyser that's meant to work in conjunction with a smart phone, to take spectral photos of a given light source, and analyse the result. I've also included links to 2 python scripts, one is used for batch processing files, the other is the guts of the analysis.

Additional materials required are a toilet paper roll, a small mirror, mine was a 2" square one from amazon, and a diffraction grating, again purchased from amazon. The diffraction grating I used is 1000 lines/mm, deviating from that will shift the diffraction angle relative to wavelength, either up or down depending on your grating.

The hole of the aperature cover should be covered with a piece of tinfoil, and its backside, including foil, painted with matte black paint. Affix the foil in place by skirting the edge with hot glue, pushing down as you go to eliminate any gap. Then pierce the foil, near the centre of the hole, with as small a needle as you can find. The smaller the hole th