Re: IR Flare Magnitude

From: Brooke Clarke (
Date: Sat Apr 03 2010 - 14:42:37 UTC

  • Next message: Ralph McConahy: "Re: IR Flare Magnitude"

    Usually when speaking about magnitude or brightness it's assumed to be 
    measured in the eye's wavelength range of 400 ot 700 nm and with a 
    weighting that matches the eye's spectral response.  So when the subject 
    under discussion includes the IR it's not clear to me how to make the 
    measurement.  One night I was playing with night vision equipment and 
    there was an extremely bright flash that bounced off my house.  It was 
    as if a flash bulb had gone off 10 feet away.  I'm sure the power was in 
    the IR, not visible range.  So what does IR Flare Magnitude really mean?
    Have Fun,
    Brooke Clarke
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