How to do get stars spectrum for $5 cheap. Simples steps of how to get stars spectrums:

• Get transparent plastic for lazer printing (pics/paper_lomond) samples.
• Get a lazer printer with at least 600 dpi
• Generate desired grid using dif_generator.lua,

usage: dif_generator.lua lines_per_mm dpi > grid.svg

• Print that grid (pics/paper_printed)
• Make a mask for your telescope((pics/paper_usage)
• Have fun pics (pics/spectrum_aldebaran)

I spent $5 for this paper set only.

#difraction grate, #difraction, #telescope, #stars, #custom, #handmade, #difractiongrate