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2009 Total Solar Eclipse

China • July 22, 2009

A composite image of the 2009 total solar eclipse based on dozens of images taken at Tianhuangping, China, by Jay Pasachoff, Sara Dwyer '11, and Rachel Wagner-Kaiser (Keck Northeast Astronomy Consortium Summer Fellow, Vassar '10) and computer-processed by Wendy Carlos.

A total solar eclipse image from Tianhuangping, China (outside Hangzhou at 900 m altitude) during the 22 July 2009 eclipse, merged with a SOHO Extreme- ultraviolet Imaging Telescope (EIT) disk image in the helium 304 Å emission line and a Large-Angle Spectrometric Coronagraph (LASCO) image of the outer corona. The corona was very sparse because of the exceedingly low phase of the sunspot cycle, really a cycle in the solar magnetic field known as the solar-activity cycle. Williams College Eclipse Expedition: Jay M. Pasachoff, Bryce A. Babcock, Katherine DuPré, Sara Dwyer, Rachel Wagner-Kaiser, Yung Hsien Ng Tam, Huajie Cao; EIT image courtesy EIT Team, NASA's Goddard Space Flight Center; LASCO image courtesy of LASCO Team, Naval Research Laboratory; compositing by Steele Hill, NASA's Goddard Space Flight Center; eclipse image processed by Wendy Carlos out of many individual images in order to bring out coronal detail.

Eclipse Images

Raw Eclipse Images

Williams College Eclipse Expedition 4-part movie; edited by Mike Kentrianakis, including HD video by Paul Rosenthal
HD version of the above

Fisheye Movie by Aram Friedman

The 2009 Williams College Eclipse Team (with sponsorship from the Committee for Research and Exploration of the National Geographic Society, Williams College, the National Science Foundation through the Keck Northeast Astronomy Consortium, Vassar College, the Rob Spring Fund, the Brandi Fund, and other private sources)


New York Times blog about our eclipse expedition (#1)

predictions for our site at Tianhuangping, west of Hangzhou, China, by Fred Espenak, NASA's Goddard Space Flight Center

photos from National Geographic News:
http://news.nationalgeographic.com/news/bigphotos/2300959.html http://news.nationalgeographic.com/news/2009/07/photogalleries/total-solar-eclipse-2009-pictures/index.html http://news.nationalgeographic.com/news/2009/07/photogalleries/total-solar-eclipse-2009-pictures/photo3.html

National Geographic Radio Interview (audio)

NASA / Espenak map

zoomable Google map of our location in China

pre-Eclipse press release

Caltech press release about the Nature review article

Williams press release about the Nature review article

Pasachoff article in the journal Research in Astronomy and Astrophysics, volume 9, number 6, pp. 613-634, May 2009 issue. "Scientific observations at total solar eclipses"

Pasachoff review article on eclipses for the International Year of Astronomy's coverage in Nature, issue, Nature, volume 459, pp. 789-795, June 11, 2009. "Solar eclipses as an astrophysical laboratory"

Interview on 365daysofastronomy.org

The 2008 August 1 Eclipse Solar-Minimum Corona Unraveled; Jay M. Pasachoff, Vojtech Rusin, Miloslav Druckmuller, Peter Aniol, Metod Saniga, Milan Minarovjech; The Astrophysical Journal 702 (2009) 1297-1308


Professor Jay Pasachoff (Jay.M.Pasachoff@williams.edu)
Williams College--Hopkins Observatory
33 Lab Campus Drive
Williamstown, MA 01267
(413) 597-2105; fax (413) 597-3200