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observing aids

Title Posted By Updated/commented datesort icon Type
Visual Observing Manual - Persian BSJ 35 weeks 3 days ago Page
Visual Observing Manual BSJ 35 weeks 3 days ago Page
Julian Date (JD) Calculator and Calendars BSJ 11 weeks 4 days ago Page
Program stars in need of observation Matthew Templeton 10 weeks 4 days ago Page
AAVSO Bulletin 78 for 2015 Matthew Templeton 2 days 6 hours ago Page
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484