Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21715807b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #158.07; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
In rapid succession, two chances to experience a total solar eclipse will soon occur over the middle of the United States. Usually, a total solar eclipse is, at most, a once in a lifetime event. However, the celebrated shadows will race over the Shawnee National Forest, near Makanda, Illinois, twice in less than 7 years. The centerlines of the 2017 August 21 and 2024 April 08 eclipses will cross at this convenient location. If you are planning a trip to that legendary heart of darkness, you should consider a site just northwest of Makanda for both events.
The two eclipse centerlines are expected to intersect at 37º 38.2’ N and 89º 15.4’ W, in the Shawnee National Forest. In 2017, totality lasting about 2 min 45 sec is expected at this location, which is the maximum duration for that eclipse. In 2024, nearly 4 min 13 sec of darkness will occur at the crossover point, but the longest period of totality for this eclipse will be seen in Mexico.
Historically, southern Illinois is mostly sunny in late August and early April. If rain or clouds mar your 2017 experience, you can hope for better weather when you return in 2024. A number of activities can enrich your outreach program: spotting planets and stars, locating shadow effects, monitoring climate changes, and watching wildlife responses. In addition, you will be able to compare and contrast your observations during the two eclipses there. Planning an expedition to this rare intersection reduces your flexibility in case of inclement weather--a small price for the novelty of multiple visits.
Unless you are a dedicated eclipse chaser, 2017 may not seem imminent. However, your outreach program choices now may shape your plans for the eclipses to come.
For additional information, visit the USNO Eclipse Portal at http://www.eclipse.org.uk/eclbin/query_usno.cgi
Bartlett Jennifer L.
Bell Steve
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