Field Work

Eclipses

61 solar eclipses: 32 total; 15 annular; 14 partial

Expeditions to observe eclipses of the sun (total unless otherwise specified):

• 1959 over Massachusetts
• 1963 Quebec, Canada
• 1970 Oaxaca, Mexico
• 1972 P.E.I., Canada
• 1973 Kenya
• 1973 Colombia (annular)
• 1974 Australia
• 1977 Pacific Ocean
• 1979 Manitoba, Canada
• 1980 India
• 1981 Pacific near Hawaii
• 1983 Java, Indonesia
• 1984 U.S. (annular)
• 1984 Papua New Guinea
• 1988 Sumatra, Indonesia
• 1989 Hawaii (partial)
• 1990 Finland
• 1991 Hawaii
• 1992 California, U.S. (annular)
• 1992 Atlantic Ocean
• 1994 New Hampshire, U.S. (annular)
• 1994 Putre, Chile
• 1995 India
• 1996 Israel (partial)
• 1997 Mongolia
• 1998 Aruba
• 1998 Malaysia (annular)
• 1999 Australia (annular)
• 1999 Romania
• 2000 Seattle (partial)
• 2000 Los Angeles (partial)
• 2001 Zambia
• 2001 Costa Rica (annular)
• 2002 Puerto Vallarta, Mexico (annular)
• 2002 Ceduna, Australia
• 2003 Iceland (annular)
• 2003 Antarctica
• 2004 Cape Town (partial)
• 2004 Hawaii (partial)
• 2005 Pacific west of the Galápagos
• 2005 Valencia, Spain (annular)
• 2006 Kastellorizo, Greece
• 2006 (French Guiana, annular)
• 2007 (airplane near Hong Kong, partial)
• 2007 (airplane near Buenos Aires, partial)
• 2008 (Nelson, New Zealand, partial)
• 2008 (Akademgorodok, Russia)
• 2009 (Anyer, Indonesia, annular)
• 2009 (Tianhuanpingm, China)
• 2010 (KanyaKumari, India, annular)
• 2010 (Easter Island)
• 2011 (Israel, partial)
• 2011 (Iceland, partial)
• 2011 (New Zealand, partial
• 2012 (US, annular)

Planned Expeditions

• 2014 (Albany, Western Australia, partial)
• 2014 (Sacramento Peak, New Mexico, partial)
• 2015 (Svalbard, total)
• 2015 (South Africa, partial)
• 2016 (Indonesia, total)
• 2016 (Tanzania, annular)
• 2017 (U.S., total)

Transits of Venus and Mercury

•   2004 Thessaloniki, Greece (Venus)
•   2006 Haleakala. Maui, Hawaii (Mercury)
•   2012 Haleakala. Maui, Hawaii (Venus)

Optical stellar, comet, and planetary observations

•   Mount Wilson Observatory (2.5-m telescope), 1970-1972
•   Palomar Observatory (5-m telescope), 1972
•   Kitt Peak National Observatory (McMath telescope), 1977
•   Mauna Kea, 3m IRTF (1981)
•   Bosscha Obs., Java, 1983
•   Mauna Kea, 2.2-m with CCD, 1984, 1985, 3.6-m CFHT, Canada-France-Hawaii Telescope, 1985
•   Kitt Peak National Observatory, coudé feed, May 1992, January 1993, January 1994, May 1994
•   1997: occultations of stars by Triton, expeditions to Hawaii and Australia
•   1999: Kitt Peak observations of iota Her and Orion Nebula for deuterium
•   2002 Mauna Kea Observatory (2.2-m University of Hawaii telescope), Pluto occultation
•   Transit of Venus, Greece, 2004
•   Pico dos Dias Observatory, Brazil, 2005: Charon occultation
•   Cerro Calan Observatory, Chile 2010: Pluto occultation
•   Transit of Venus, Haleakala Observatory, Hawaii, 2012; collaborated at Sacramento Peak Observatory and Big Bear Solar Observatory
•   2006, 2014, 2015 Mt. John University Observatory, Lake Tekapo, New Zealand: stellar occultations of Pluto and other objects in the outer solar system

Optical solar observations

•   Sacramento Peak Observatory, 1965
•   Big Bear Solar Observatory, 1970-72
•   Sacramento Peak Observatory, 1971
•   Kitt Peak National Observatory, 1972
•   Haleakala Observatory, 1977, 1980-81
•   Swedish Solar Telescope, La Palma, 2004, 2005, 2006

Radio observations

•   Sagamore Hill Radio Observatory (150-foot and solar telescopes), 1968-69
•   National Radio Astronomy Observatory (300-foot), 1969
•   Owens Valley Radio Observatory (130-foot), 1970-73
•   Parkes (Australia) (210-foot), 1974
•   Max Planck Institute for Radio Astronomy, Bonn (Germany) (100-meter), 1976
•   VLA, 1987
•   Berkeley-Illinois-Maryland Array, 1990-91
•   National Radio Astronomy Observatory (12-m on Kitt Peak), 1993
•   National Radio Astronomy Observatory (12-m on Kitt Peak), 1993, 2000;
•   Nobeyama Radio Observatory, Japan, 2001
•   Giant Metre-Wave Radio Telescope, Pune, India, 2004, 2010
•   Jansky Very Large Array, west of Socorro, NM, annular solar eclipse, 2012

plus various remote observing at Kitt Peak 12-m, Arecibo

Space observations

•   NASA Guest Investigator on OSO-8, involvement began 1972, satellite launched 1975
•   observed chromospheres and coronas of late-type stars with International Ultraviolet Explorer (IUE), 1978
•   collaborated with Extreme-ultraviolet Imaging Telescope (EIT) and Large Angle Spectrographic Coronagraph (LASCO) teams, Solar and Heliospheric Observatory (SOHO), 1998, 1999, and 2001, 2006, 2008, 2009, 2010
•   NASA Guest Investigator on Transition Region and Coronal Explorer (TRACE), 2004-2007
•   collaborated with NASA’s Solar Dynamics Observatory, 2010
•   for transit of Venus 2012, collaborated with Solar Dynamics Observatory, Hinode, ACRIMSAT, SORCE/TIM