Uploaded on May 21, 2014 05:44 UTC

Pointing the spectrometer at the hanging light fixture in the room, which is driven by partly dimmed halogen bulbs (3x Triangle Bulbs 59241 BC-150BT15/HAL/W 150-watt Halogen BT15), at about 8 ft distance, through muted yellow translucent cover.

According to Wikipedia, halogen bulbs usually contain either iodine or bromine (in addition to usual incandescent gases). This spectrum would seem to be closer to bromine than iodine, given the lack of violet spikes. On the other hand, the yellowish globe could be blocking those lines.

-- (Cloned calibration from calib1)


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