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observing aids

Title Posted By Updated/commented date Typesort icon
Online Resources for Beginning Observers BSJ 30 weeks 5 days ago Page
Atmospheric seeing conditions for solar observing Matthew Templeton 3 years 51 weeks ago Page
Visual Observing Manual - Hungarian BSJ 1 year 3 weeks ago Page
AAVSO Bulletin Matthew Templeton 41 weeks 12 hours ago Forum topic
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484