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solar observing

Title Posted Bysort icon Updated/commented date Type
SunEntry - A sunspot data entry program BSJ 7 weeks 1 day ago Page
AAVSO Solar Section Update for 2013 Matthew Templeton 1 year 25 weeks ago Page
The Gyrator III VLF Receiver Matthew Templeton 2 years 30 weeks ago Page
The Zurich Classification System of Sunspot Groups Matthew Templeton 3 years 4 weeks ago Page
Solar News Matthew Templeton 1 year 25 weeks ago Page
What are sunspots? Matthew Templeton 2 years 23 weeks ago Page
SID Database Matthew Templeton 2 days 18 hours ago Page
Accuracy and Consistency in the Production of the American Sunspot Number (Ra) Matthew Templeton 39 weeks 15 hours ago Page
AAVSO Sudden Ionospheric Disturbance Program Observers Matthew Templeton 2 years 9 weeks ago Page
Dances with Wolfs: A Short History of Sunspot Indices Matthew Templeton 20 weeks 16 hours ago Page
Solar Bulletin Matthew Templeton 2 days 19 hours ago Page
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484