We're developing several approaches to calibrating your video spectrometer.

Compact Fluorescent bulbs

(copied from Dave Haffner's email)

The CFL spectra seems like a good bet for doing spectral calibration of some sort. I think we just need to standardize the make and model. Looks like there is some significant differences in the spectrum of just a few bulks this person bought at the store http://web.ncf.ca/jim/misc/cfl/

It would be worth a survey to find a bulb model that is useful for this task spectra-wise, and one the manufacturer can share a decent spectrum for in their specs. Of course cheap and widely available is important too.

It also occured to me that once we find a good bulb, we could that THE BULB into a lab and measure it's spectrum precisely. Then this spectrum could be used as a reference to calibrate the instruments.

Developing a spectral library of calibrated bulb spectra

• marking/tagging some as "calibrated" if they've been tested on other equipment?