Winter Solstice Lunar Eclipse 2010
by William Castleman
I know I'm a month late here with this one, but since the winter solstice lunar eclipse was missed by so many people, I thought it might be nice to post the most digestible possible way to appreciate it. See the eclipse just like it happened, but just a little bit more quickly.
The following time-lapse was recorded over a period of just under 4 hours (see details below) and really captures what it was like out there on that cold night. I was outside for the duration, and luckily had enough alcohol to ward off any perception of frostbite. I get off on dumb stuff like that, you know, seeing something magnificent with my own eyes; but I wonder if I might have turned in early that night had I know that such a fine video would be available shortly afterwards.
For whatever reason, seeing the eclipse in accelerated speed impresses upon me a real sense of the size of the earth in comparison to the moon. While I could detect the shadow's curvature on the night of the event, seeing it in motion gives me a better sense of how big the earth would be if it were at the same distance from me as the moon. (although, due to the geometry at play and the sun's size {above not to scale} the shadow of the planet is slightly smaller than the planet itself)
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Time lapse video of Winter Solstice Lunar Eclipse on December 21, 2010 from 1:10 AM EST (6:10 GMT) to 5:03 AM EST (10:03 GMT) from Gainesville Florida. This is the image stabilized version of the video originally posted on December 21, 2010 at: vimeo.com/18046748 The music is Claude Debussy’s Nocturnes: Sirènes.
I used a 4 inch telescope (Takahashi TSA-102 with TOA-35 field flattener) on an equatorial mount (Losmandy GM-8) that was polar aligned and following the Moon at a lunar tracking rate. Photographs were taken every 20 seconds with a dslr camera (Canon EOS-40D) using EOS Utility software at ISO 100 or ISO 200 in aperture priority mode with variable exposure compensation. Spot metering was used. The tracking was manually corrected every 20 to 30 minutes to keep the Moon centered in the field. Photos were assembled in Quicktime Pro software to make the time lapse video. The video was stabilized in After Effects CS5. Sony Vegas 9 merged the video, music and text.
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