Safely View the Eclipse! Order here!

Safely View the Eclipse! Order here!

How to SAFELY view the eclipse

You MUST use a pair of eclipse glasses if viewing with the naked eye OR a solar filter if viewing through telescopes, cameras, binoculars and other optical devices. SUNGLASSES ARE NOT A SUBSTITUTE.
 
  • Failure to use proper eye protection will result in permanent eye damage or blindness. Buy your very own Teton Totality eclipse glasses here.
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  • For more information: https://eclipse2017.nasa.gov/safety

FUN FACTS

  • The earliest depiction of an eclipse is a petroglyph in Ireland, dating from 3340 bce.
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  • In Greek, the word for eclipse (gives us the modern word) means 'abandoning', the sun abandoning the earth.
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  • There are accounts of eclipses in the gospels and the Koran. Especially for the story of '3 hours of darkness' at the crucifixion, there are historical eclipses that could fit the dates - but of course a total solar eclipse does not last for 3 hours.
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  • The eclipse of 1560 was total over Spain, Portugal and Morocco.
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  • 1878 Maria Mitchell WY eclipse, women unaccompanied travel from east coast. Using very similar filters on telescopes to today.
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  • 1878 Henry Draper, Thomas Edison, James Craig Watson, Rawlins, came to observe.
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  • Owing to irregularities in the orbit of Mercury, another planet, Vulcan, had been proposed closer to the sun than Mercury - and respectable astronomers even claimed sightings. Einstein's theory of relativity with the curvature of space and time as masses move and interact accounted for the irregularities and sightings of Vulcan ceased. Eddington's famous measurements of the curvature of light during the solar eclipse of 1919 was the first major experimental confirmation of relativity.
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  • The moon's shadow during a lunar eclipse is approx. 1200 km wide.
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  • The sun's shadow during a total solar eclipse isn't more than 300 km wide.
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  • The sun is 400x larger than the moon, but is 400x farther away, so they appear similar in size. The orbits of moon and earth are elliptical. When the apparent size of the moon is as large or larger than that of the sun, you have totality.
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  • Syzygy: when the earth, moon and sun line up in same plane.
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  • The moon's orbital plane is inclined at 5 deg 9 min - see this simulation.
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  • The umbra only hits a relatively small spot. People often say that their first total eclipse is a life-changing event, and they become eclipse chasers or  'Umbraphiles' - lit. 'shadow lovers'.
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  • There is a TSE on avg every 18/12, next in SE Idaho / Jackson WY is in 2252.
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  • The partial eclipse starts at 10:16, sun at 28 deg, you need to be wearing your teton totality eclipse glasses to look at the sun throughout the period before and after totality. It becomes total at 11:36.
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  • The sun's shadow travels from the west / north west just before totality.
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  • This has resulted in screaming with hysteria, even when expected, a "wall of dark shadow like thunder, racing across at 1800 miles an hour" It was "so dark drivers on the highway turned on their headlights.
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  • Around the edges of the moon, we should be able to see outer atmosphere of the sun, the corona, around 3M deg, hotter than the photosphere, the part we usually see.
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  • No other planets in our solar system get totality the way we do, and only for the next 600 million years because the ??? See if you can figure out the answer.


Notes from a fascinating talk by Dr. Samuel Singer, Executive Director of Wyoming Stargazing, at Jackson Hole Library and Alta Public Library, with additions.