P. Funk Posted February 1, 2004 Posted February 1, 2004 hi people, I am just about to start my A level physics sensing coursework: "measuring the frequency response of a light sensor" is what I am doing. my plan is to get a parcan at one end, and a sensor at the other end of a room, and put gels in the way and see how it affects the sensors output. now, can anyone tell me what the transmission charts on the lee/rosco swatchbooks are taken from? please say its a 5600K source, because then it will match the transmission of the par64. and before anyone comments, yes, I know I could use a maglite instead. but I want to use a parcan. :** laughs out loud **:
gareth Posted February 2, 2004 Posted February 2, 2004 please say its a 5600K source, because then it will match the transmission of the par64.Tungsten Par 64 lamps are 3200K sources ...
Bryson Posted February 2, 2004 Posted February 2, 2004 Guaranteed to be 3.2k, according to a recent post by Lightnix. Have you tried ringing or e-mailing Lee filters and just asking them?
P. Funk Posted February 2, 2004 Author Posted February 2, 2004 yeah soz.. got me numbers wrong. no I havent tried phoning lee - just wondered if you knew. I may well jut "assume" that they are correct for what I am using B-)
tuxlux Posted February 2, 2004 Posted February 2, 2004 On the lee website, if you actually go to the info on the gel, it references 2 sources, the C standard and 3200K. e.g.http://www.leefilters.com/LPFD.asp?PageID=171
Jivemaster Posted February 2, 2004 Posted February 2, 2004 Look up a diffraction grating and a collimated source then you can work through the spectrum better than with gels and go controlledly from far UV to far IR. look up spectrometers and spectroscopes in analytical chemistry books, Look at VOGEL Quant org/inorg analysys for methods and theory and maths.for a starter.
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