2018 Lunar Eclipses, Compared
Taken by Petr Horálek on July 27, 2018 @ Ko Samui, Thailand / Rhodes, Greece
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The image shows sequence of both total lunar eclipses of 2018 compared to each other. In both cases, identic equipment, setting and post-processing was applied to get the best comparsion possibilities. The white lines show ecliptic (with its sky equator orientation), small crosses mark the centers of Earth’s shadow (showed by thee circles around total phases). In this north hemisphere orinetation the Moon always enters the shadow from right to left. Except the colors and darkness in the Earth’s shadow the most noticeable is angular size of the Moon and and the shadow caused by perigee vs. apogee effect (January eclipse was close to periigee, July one to apogee), making angular difference about 13 percents between these both cases. Used Canon 6D, MTO 1100mm/f10.5, ISO 500, 15s exposures on Vixen GP-2 mount (total eclipse) and ISO 200, 1/60s exposures (partial phase). January eclipse was captured from Ko Samui Island, Thailand, the July one from Rhodes Island, Greece.

More: www.astronom.cz/horalek
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