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The solar observations at Armagh Observatory in 1795–1797

✍ Scribed by R. Arlt

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
389 KB
Volume
330
Category
Article
ISSN
0004-6337

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✦ Synopsis

Abstract

This article reports on solar observations by J.A. Hamilton and W. Gimingham at Armagh Observatory made in 1795–1797. A number of sunspot positions were obtained from the original observing notes, mostly from micrometer measurements. The period is particularly interesting for the understanding of the onset of the Dalton minimum and a possible minor cycle between the Cycles 4 and 5. For the same period, sunspot positions recorded by Staudacher were measured and published in an earlier paper (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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