Ready for Sunday night's total lunar eclipse? Here's astroguyz with how and when to view the first of two total lunar eclipses for 2022, projects, weather prospects, watching the eclipse online and more:
This is not a ‘Super Blood Moon Eclipse…’ though no doubt folks will try to bill it as such. The eclipse actually occurs about a day and a half prior to lunar perigee on May 17The sky scene from Norfolk, Virginia at mid-totality. Credit: Stellarium.
A lunar eclipse is a fine stately affair, requiring no special optical equipment… though a small telescope or binoculars can certainly enhance the view. Photographing a total lunar eclipse is also pretty easy to do, though you’ll want to use a focal length of at least 200mm—otherwise, the Moon will appear as nothing more than a silvery-white dot.
This value depends on two factors. One is how centrally the Moon passes through the umbra. During the brief eclipse on the night of April 4on the estimated versus actual size of the Earth’s shadow at the Moon’s distance. The second factor is the amount of dust and aerosols currently suspended in the Earth’s atmosphere, The red you’re seeing during totality is due to the sunlight from a thousand sunrises and sunsets, getting filtered into the cone of the Earth’s shadow from around the rim of the planet. In the past year, eruptions in Tonga and forest fires and dust storms around the world may add to this environmental atmospheric load, resulting in a fairly dark ruddy total lunar eclipse.
Saroses evolve over time, starting as shallow penumbrals, then becoming central total eclipses before receding. This weekend’s eclipse is member 34 of the 72 eclipses in1427, and will produce its last total lunar eclipse on September 3There are also a few fun projects to carry out during a lunar eclipse. One is a long-standing effort toAnother is to attempt to measure your longitude during an eclipse.was used by mariners such as Captain James Cook and Columbus.
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