Dumpster Optics specifies no equipment costing more than $2. So to play fair, I used a cheap laser pointer from EBay (rather than my nice JDSU HeNe), a dollar store magnifier, and stuff from the basement. Hard to photograph, but Poissons/Arago spot was pretty clear even when the washing machine (screen) was running.
For more Dumpster Optics, [ Ссылка ]
