Sunday, December 24, 2006

A Xmas mystery on Mount St Helens

Mount St Helens has been quietly active over the last few days, with two hot-spots visible in the crater last night - as shown in the stacked set of images above - and intermittently over the last week or so.

However, at 18:47 yesterday evening a large bright light appeared above and to the left of the crater as seen in this enhanced image which was superimposed over a daylight image of Mount St Helens for reference.

This bright spot only appeared on this one image, and no others. So it is likely that it is nothing more than a glitch or due to noise - however, the spot is much larger than the usual noise spikes that I have seen in the images from the Volcanocam over the last two years.

Below is the original image, and beneath that a b&w image with that had the noise filtered out - so you can see that I'm not making this up!

Any thoughts as to what it may be?


Anonymous Bob Harrington said...

Hi Daz,

When the camera switches to IR mode after dark, the visible light image goes a tad fuzzy. I'm going to make a guess that the 'mystery light' is the out-of-focus image of a navigation or anti-collision strobe on a passing aircraft.

Whether the source is a bit of Boeing or Airbus flying tubework - or perhaps a reindeer afterburner - is left for the reader to decide...

Thanks for all the work you have done to bring us all the glows that's fit to print!

Bob ^,,^

2006-12-30, 3:02 a.m.  
Anonymous Anonymous said...

Oncoming aircraft headlight?

2007-01-08, 9:33 a.m.  
Blogger Daz said...

No idea - we haven't seen anything else like it before or since ...

2007-06-27, 10:59 p.m.  

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