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observing aids

Title Posted By Updated/commented date Typesort icon
Atmospheric seeing conditions for solar observing Matthew Templeton 3 years 37 weeks ago Page
Visual Observing Manual - Hungarian BSJ 42 weeks 9 hours ago Page
Frequency of Observations for Different Variable Star Types BSJ 3 years 45 weeks ago Page
Bob Nelson's O-C files Matthew Templeton 8 weeks 6 days ago Page
AAVSO Bulletin Matthew Templeton 27 weeks 1 day ago Forum topic
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