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observing aids

Title Posted By Updated/commented date Typesort icon
Online Resources for Beginning Observers BSJ 1 year 17 weeks ago Page
Atmospheric seeing conditions for solar observing Matthew Templeton 4 years 38 weeks ago Page
About Julian Dates BSJ 4 years 18 weeks ago Page
Bob Nelson's O-C files Matthew Templeton 4 weeks 4 days ago Page
AAVSO Bulletin Matthew Templeton 1 year 27 weeks ago Forum topic
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484