IR 101 by Jeff B
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Digital Infrared 101 by Jeff B
Infrared comes in basically 3 "colors" or "bands".
The other in between bands are attenuated by atmospheric H2O and CO2
and look like fog in IR, not much use for imaging ( but great for pollution
Glass and most plastics are opaque to all but theshortest wavelengths,,including
lenses and filters, a "real" IR camera has optics made from
solid germanium or silicon metal, exotic crystals ($$$) and use cryo-chilled
platinum ccd chips.
The Big Question,,,finally,, Does a color ccd camera "see"
IR ? I'm not sure cause I have not tried it yet. If you can photograph
a hot soldering iron,,elect. stove element (just below red hot in a
dark room) or the TV remote, then you can see IR. But just barely,,,you
might call it "extended red" sensitivity. (quantum mechanics
is in IR-301).
Emissivity,color temp,Planks curves ( you'll like them )are in IR-102.
* For the record I tried photographing several hot items with my e-10 in total darkness, and I am sorry to report that they did not register even at 20+ sec bulb exposure. Bo.