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Sunspot Drawing References


Among the standard references for explaining the methodology of visually measuring sunspot magnetic fields are:

Hale, George E. and Nicholson, Seth B.: 1938, Carnegie Institution of Washington Publication, No. 498, 'Magnetic Observations of Sunspots 1917 - 1924, Part 1.'

[Image of book]
Bray, R. J. and Loughhead, R. E.: 1965, John Wiley and Sons, Sunspots. (Also available as a Dover reprint.)



[Image of book]


See also: Hale, George E., et. al.: 1919, Astrophysical Journal, Vol. 49, 'The Magnetic Polarities of Sunspots.'


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