Sunday, September 18, 2005

Mount St Helens emerges from the clouds

After several days of bad weather obscuring the view of the crater, the clouds parted this morning to give us a view of the glowing lavadome. There were only a couple of small outbursts of activity during the night. Hopefully this signals a change to clearer views of the mountain in the days to come.


Anonymous Anonymous said...

I notice that the sensing element used in my digital camera is sensitive to infrared light. If I point a remote control at the lens it shows up as a bright white light to the camera where you can not see it at all by eye. Remote controls use a frequency of IR that falls outside of the range of the human eye. I don't know what 'color temperature' it is equal to but I would guess it might a glow similar to iron at around 1200 degrees f. Might some of the image picked up by the VolcanoCam be from this difference in sensing bandwidth of human eye vs electronics? Further, might the camera be prone to sensor burnout more at this frequency than visible light?

2005-09-23, 12:09 a.m.  
Anonymous Anonymous said...

Could some statistical compilation of the measured light emitted by the glowing lava dome be used to measure the rate of flow? Count for example all the photons made per evening, factor out clouds by using a control camera?

2005-09-23, 12:12 a.m.  

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