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Re: Photomultiplier Tubes camera build

PostPosted: Sun Sep 10, 2017 2:57 pm
by Harry Dalek
viya0414 wrote:The yellow output of white LEDs is generated from the UV excitation of a phosphor which can be quite slow in response time. Though the PMT shouldn't much respond to it, why throw another potential variable into the equation? White LEDs are marginal even for NBTV, they may get better with time but generally white LEDs are used in flashlights and other simple devices where human eyesight is involved - and that's not particularly fast.


If you are meaning the lighting used ..... pretty much room light via natural day light ..
i tried a little bit of lighting to my test cards seemed fine what i used apart from it was not a great uniform light source had no problems with the white light leds ,the PMT might be more sensitive to the UV end of the spectrum i think but seems good enough the lower end as well .