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observing aids

Title Posted By Updated/commented date Typesort icon
Bob Nelson's O-C files Matthew Templeton 31 weeks 4 days ago Page
Julian Date (JD) Calculator and Calendars BSJ 41 weeks 6 days ago Page
AAVSO Bulletin Generator Matthew Templeton 2 years 29 weeks ago Page
AAVSO Bulletin Matthew Templeton 50 weeks 14 hours ago Forum topic
AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484