Skip to comments.Astronomy Picture of the Day -- Waterton Lake Eclipse
Posted on 04/17/2014 11:31:51 AM PDT by SunkenCiv
Explanation: Recorded on April 15th, this total lunar eclipse sequence looks south down icy Waterton Lake from the Waterton Lakes National Park in Alberta, Canada, planet Earth. The most distant horizon includes peaks in Glacier National Park, USA. An exposure every 10 minutes captured the Moon's position and eclipse phase, as it arced, left to right, above the rugged skyline and Waterton town lights. In fact, the sequence effectively measures the roughly 80 minute duration of the total phase of the eclipse. Around 270 BC, the Greek astronomer Aristarchus also measured the duration of lunar eclipses - though probably without the benefit of digital clocks and cameras. Still, using geometry, he devised a simple and impressively accurate way to calculate the Moon's distance, in terms of the radius of planet Earth, from the eclipse duration. This modern eclipse sequence also tracks the successive positions of Mars, above and right of the Moon, bright star Spica next to the reddened lunar disk, and Saturn to the left and below.
(Excerpt) Read more at 188.8.131.52 ...
[Credit & Copyright: Yuichi Takasaka / TWAN / www.blue-moon.ca]
That lake was just a puddle until the tidal effect of all those moons kicked in.
The dreaded red moon.
Thanks SC ... more source material for the PC Background collection!
(I still have to figure out how to dodge the extreme “Moon-burn” at the right side it makes the image a little too overpowering as a full-screen B/G ;)
Yeah, I was really worried about that. ;’)
It was cloudy, so I missed the red moon. Left me here to stand but still not sleeping.
terrestrial...but VERY Cool!
That lake really sells it!
The big version is going on the hard drive in a minute, I neglected to do that before.
The next one is in October, depending of course on where one is. :’)
I expect the timeshare salesmen any day now.
Oooooh, I finally saved the large version and set it as desktop background, whoooooa, dock tah. Beautiful. And the icons really stand out better.
Lovely APOD, Sir.
The time lapse salesmen have already come and gone though.
HA HA HA!
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