Marco Alpert wrote:
http://www.alpert.com/marco/photo15/peso21.html
Okay, not really. It’s actually the laser that creates the “artificial star”
for Lick Observatory’s amazing adaptive optics system:
Very cool. I've never seen a red beam be visible in clean air, just the
green ones. But maybe that's only because the green ones are currently
the only cheap ones powerful enough to have enough light scatter through
clean air to be visible.
Was it visible to the naked eye? Or was that the result of a longer
exposure?
https://en.wikipedia.org/wiki/Laser_guide_star
There is an amazing photo in that article:
https://en.wikipedia.org/wiki/Laser_guide_star#/media/File:Laser_Meets_Lightning.jpg
I wonder if the laser ionized the air enabling that lightning strike.
They wouldn't be doing much astronomy with the sky that cloudy.
Comments, as always, welcomed.
-Marco
---------------
http://www.alpert.com/marco
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