Comment karlsuss2 SNF 2011-06-30 13:24:31: lamp intensity drop off during multiple exposure

lindaw at snf.stanford.edu lindaw at snf.stanford.edu
Thu Jun 30 13:24:31 PDT 2011


OK, I increased the wait time to 15, then 20 seconds for a 8.0 sec, 9 cycle multiple exposure.  The intensity spikes at 20 during the 1st cycle, then after about 4 seconds drops down to 14.9.  The next few cycles the intensity starts lower, and then works its way up to 14.9, a little more slowly with each cycle.  By the 5th or 6th cycle, the baseline intensity starts to drop off and the lamp power supply starts beeping.  The only significant difference between the 15 sec wait and the 20 sec wait was that the drop off on the last 4 cycles wasn't as bad for the 20 sec wait, but the intensity still drops off.




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