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adam stuart | profile | all galleries >> Galleries >> lunar_eclipse_12212010 tree view | thumbnails | slideshow
Those of you dedicated enough to get out of bed in the wee hours of the morning would have had the best chance to view the total eclipse. The event lasted about three and half hours in total, beginning at approximately 1:33 AM EST (as predicted) and ending at about 5:01 AM, according to NASA. I was relegated to capturing the event with a hand-held SONY camcorder, and my daughter used a Nikon FG with a 410 mm lens at f/3.5 (with a cable release). My observatory and telescopes were unavailable as the Full Moon was blocked by my neighbor's palm fronds, all the way to 63* Altitude and 273* Azimuth (time of totality). For color film photography (non-tracking), we used ASA 800. The moon moves (earth rotates) at about 15 degrees/hour (modified slighly by the moon's orbital velocity, but this is just a ballpark calculation). So in 1 hr it moves 129mm on film. That's 2.15mm/min or 0.036mm/sec. We used exposure times of 1 to 5+ seconds, estimated, using a cable release to avoid exposure blur.


Lunar Eclipse Mosaic.jpg
Lunar Eclipse Mosaic.jpg
2000px-Geometry_of_a_Lunar_Eclipse_svg.bmp
2000px-Geometry_of_a_Lunar_Eclipse_svg.bmp