SDAC Solar Image

SDAC

Aurora Borealis

Historical solar observations

Here I have started to assemble sources concerning the examination and techniques of historical solar observations.

Display # 
# Web Link Hits
21   Link   Solar activity over the last 1150 years
Here is a paper covering solar activity over the last 1150 years
1457
22   Link   Historical sunspot drawing resource page
This gives a good resume of the numbers of drawings completed by different observers in the 19th century
1532
23   Link   First butterfly drawing from Schwabs observations
Here is a paper considering Schwabs drawings.
1301
24   Link   Ancient solar astronomy
Here is part of a book about ancient solar astronomy
1566
25   Link   Cronology of Discoveries about the Sun
Here is an excellent list of solar discoveries
1438
26   Link   A solar cycle lost in 1793 to 1800
Here is an excellent paper identifying this lost solar cycle
1296
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