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solar observing

Title Posted By Updated/commented datesort icon Type
The Zurich Classification System of Sunspot Groups Matthew Templeton 3 years 10 weeks ago Page
The Gyrator III VLF Receiver Matthew Templeton 2 years 36 weeks ago Page
What are sunspots? Matthew Templeton 2 years 29 weeks ago Page
Solar News Matthew Templeton 1 year 31 weeks ago Page
AAVSO Solar Section Update for 2013 Matthew Templeton 1 year 31 weeks ago Page
Accuracy and Consistency in the Production of the American Sunspot Number (Ra) Matthew Templeton 45 weeks 15 hours ago Page
Dances with Wolfs: A Short History of Sunspot Indices Matthew Templeton 26 weeks 16 hours ago Page
SunEntry - A sunspot data entry program BSJ 13 weeks 1 day ago Page
SID Database Matthew Templeton 2 weeks 1 day ago Page
Solar Bulletin Matthew Templeton 2 weeks 1 day ago Page
AAVSO Sudden Ionospheric Disturbance Program Observers Matthew Templeton 6 days 23 hours ago Page
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484