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observing aids

Title Posted By Updated/commented date Typesort icon
Mentor Program SXN 2 years 1 week ago Page
Computing the JD or UT BSJ 3 years 32 weeks ago Page
2012 JD Calendar BSJ 2 years 32 weeks ago Page
AAVSO Bulletin Matthew Templeton 42 weeks 1 day ago Forum topic
AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484