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Eclipse chasing is the pursuit of observingsolar eclipses when they occur around theEarth.[1] Solar eclipses must occur at least twice and as often as five times a year across the Earth. Total eclipses may occur multiple times every few years.[2]
A person who chases eclipses is known as anumbraphile, meaningshadow lover.[3] Umbraphiles often travel for eclipses and use various tools to help view the Sun includingsolar viewers also known as eclipse glasses, as well as telescopes.[4][5]
As of 2017[update], three New Yorkers, Glenn Schneider,Jay Pasachoff, and John Beattie have each seen 33 total solar eclipses, the current record.[6]Donald Liebenberg, professor of astronomy atClemson University inSouth Carolina has seen 26 traveling toTurkey,Zambia,China, theCook Islands and others.[7]
In the 19th century,Mabel Loomis Todd, an American editor and writer, and her husbandDavid Peck Todd, a professor of astronomy atAmherst College, traveled around the world to view solar eclipses.[8]
In 1923, US Navy tried to observethe solar eclipse of September 10 from sixteen planes, includingFelixstowe F5L biplane, "to determine the centerline of the eclipse from air." No photo recorded the eclipse. Officer and photographerAlbert William Stevens was one of the pilots on this expedition; he is sometimes called "the father of airborne astronomy".[9] There was another attempt to observe a solar eclipse, this time from a dirigible. On 24 January 1925, U.S. Naval Observatory and U.S. Bureau of Standards gathered a group of astronomers to observe atotal solar eclipse from theUSSLos Angeles airship over the New York City, with CaptainEdwin Taylor Pollock as a head of the group.[10][11] They used "two pairs of telescopic cameras", to capture inner and outer portions of Sun's corona, and a spectrograph. The expedition achieved good publicity, but it was not very successful in its observations - the dirigible was not very stable and the photos were blurred.[12] The next attempt was successful: an expedition of theNaval Observatory to observe thesolar eclipse of April 28, 1930, onHoney Lake, California, withVought 02U-1 plane equipped with a camera, recorded "the approach of the shadow".[9]
Army Air Corps and theNational Geographic Society organized another expedition in 1932, to observethe eclipse of August 31. Accompanied by Lieutenant Charles D. McAllister of theArmy Air Corps, Stevens took the first photograph of the Moon's shadow projected onto the Earth during asolar eclipse.[13][9][14]
Royal Canadian Air Force observed thesolar eclipse of July 9, 1945, from four planes: "a Spitfire, a Mitchell, and two Ansons"; three planes used seven standard aerial photography cameras, "adjusted to automatically take exposures".[9] For thesolar eclipse of May 9, 1948, National Geographic society organized several ground stations and two backup planes for a case of bad weather. TwoB-29s, stationed on theAleutian Islands, successfully observed and photographed the eclipse.[9]
For thesolar eclipse of June 30, 1954, observations were made "from the open door of a special Lincoln aircraft". Photographs helped "to derive coronalbrightness and polarization, along with sky brightness and polarization". Several missions were made in 1960s. ThreeNC-135 planes of theLos Alamos Scientific Laboratory (LASL) were used for eclipses observations from 1965 to 1980. The planes were operated by theAtomic Energy Commission.[9]
In1973, the French Concorde prototype, c/n 001, was modified with roof-top portholes for asolar eclipse observation mission of30 June 1973, at the end of the French testing programme. Observational instruments were installed on board, and the aircraft flew across Africa for 74 minutes of totality. One of the scientists wasDonald Liebenberg, who had previously flown on LASL's NC-135.[15][9] The airplane is now at theLe Bourget Air and Space Museum on permanent display in eclipse livery, with the portholes displayed.[16]
In 2024, it was estimated by US tourism officials that at least 4 to 5 million people traveled from various parts of the country to witnessthe eclipse along the path of totality. This made it the largest travel day of the year in the country, bringing an estimated economic boost of $1.5 billion.[17]
Flying at an altitude of five miles near the centre line of the eclipse zone, the aerial unit of the National Geographic Society's eclipse expedition, conducted by Captain Albert W. Stevens and Lieutenant Charles D. McAllister of the Army Air Corps, had an unobstructed view of the eclipse throughout totality. ...
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