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Lunar Eclipse 2019-01-21 | by herbraab
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Lunar Eclipse 2019-01-21

Time lapse image of the total lunar eclipse that took place in the early morning hours of January 21, 2019. Time between each single image was three minutes, total time covered is about three hours. Exposure time was 0.5 seconds at f/5.6 and ISO 800 during totality, and 1/250 to 1/45 second at f/5.6 and ISO 100 during the partial phases. Camera used was a Canon EOS 550D, the focal length was set to 24mm.


To the right of the eclipsed moon, multiple images of the stars Castor (Alpha Gemini) and Pollux (Beta Gemini) can be seen. Images of Regulus (Alpha Leonis) are visible in the upper left corner of the image.


This is not a Photoshop composite. It is a series of images that were taken with the camera on a fixed tripod, programmed to take photos in regular intervals from the start of the eclipse until moonset. These individual shots were stacked to show the true path of the Moon across the sky during the eclipse. The composite was created using StarsStaX software that I usually use for my star trails images.


This image has been published as 'Bonus Earth Science Picture of the Day' on the Earth Science Picture of the Day Facebook Site on January 30, 2019.

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Taken on January 26, 2019