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observing aids

Title Posted By Updated/commented datesort icon Type
Online Resources for Beginning Observers BSJ 17 weeks 2 days ago Page
Visual Observing Manual BSJ 15 weeks 4 days ago Page
Visual Observing Manual - Spanish BSJ 15 weeks 4 days ago Page
Program stars in need of observation Matthew Templeton 14 weeks 4 days ago Page
Bob Nelson's O-C files Matthew Templeton 9 weeks 2 days ago Page
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484