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H-alpha synoptic charts of solar activity during the first year of solar cycle 20 October, 1964-August, 1965
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1975
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Series: Report UAG ; 41
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Description:"Solar activity during the period October 28, 1964 through August 27, 1965 is presented here in the form of charts for each solar rotation constructed from observations made with the chromospheric H-alpha spectral line. These H-alpha synoptic charts are identical in format and method of construction to those published for the period of Skylab observations [McIntosh, 1975]. The sunspot minimum marking the start of Solar Cycle 20 occurred in October, 1964; therefore, these charts represent solar activity during the first year of this solar cycle. It is appropriate to publish these data at this time for comparison with observations to be made during the imminent solar minimum of 1975-1976" - - taken from page 1.
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Content Notes:by Patrick S. McIntosh and Jerome T. Nolte.
Also available via the Internet.
Includes bibliographical references (page 2).
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Rights Information:Public Domain
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Compliance:Library
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