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solar observing

Title Posted By Updated/commented date Typesort icon
Dances with Wolfs: A Short History of Sunspot Indices Matthew Templeton 16 weeks 1 day ago Page
Solar Bulletin Matthew Templeton 6 days 16 hours ago Page
AAVSO Solar Section Update for 2013 Matthew Templeton 1 year 21 weeks ago Page
The Gyrator III VLF Receiver Matthew Templeton 2 years 27 weeks ago Page
The Zurich Classification System of Sunspot Groups Matthew Templeton 3 years 3 days ago Page
Solar News Matthew Templeton 1 year 21 weeks ago Page
What are sunspots? Matthew Templeton 2 years 19 weeks ago Page
SID Database Matthew Templeton 6 days 15 hours ago Page
Accuracy and Consistency in the Production of the American Sunspot Number (Ra) Matthew Templeton 35 weeks 1 day ago Page
SunEntry - A sunspot data entry program BSJ 3 weeks 2 days ago Page
AAVSO Sudden Ionospheric Disturbance Program Observers Matthew Templeton 2 years 5 weeks ago Page
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484