Quote Originally Posted by khyberkitsune
"then use black lights for the 730 IR"

That's really funny. Black lights are made from Woods Glass and thus only allow UVA-410nm light, and 1000+nm IR through. No short-wave IR permitted.

Wood's glass - Wikipedia, the free encyclopedia
Just another wikipedia screw-up.


"The spectra of woods glass passes a small peak from starting at 350 and ending at 400nm. Wratten 18a is based on woods glass but gives a wider peak with better transmittance from 300 to 400nm. However, the IR cut is lower, starting at ~690nm and it peaks at 730nm before tapering off. Woods glass on the other hand begins passing IR at 720nm and has a larger window."


I also have a spectral chart for Wood's glass showing the 730 nm. peak.
I just can't find the chart in my disorganized mess..

Wikipedia is a lousy source.
Do not depend on it.

For instance, I used to be the crown prince of Tuva.
Don't believe that?
Um, give me 22 minutes, then go look it up.

Aloha,
Weez's for Wood's