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observing aids

Title Posted By Updated/commented date Typesort icon
Guidelines for new solar observers Matthew Templeton 4 years 35 weeks ago Page
2012 JD Calendar BSJ 3 years 14 weeks ago Page
Mentor Program SXN 2 weeks 2 days ago Page
Computing the JD or UT BSJ 4 years 15 weeks ago Page
AAVSO Bulletin Matthew Templeton 1 year 24 weeks ago Forum topic
AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484