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observing aids

Title Posted By Updated/commented date Typesort icon
AAVSO Bulletin 75 for 2012 weo 2 years 13 weeks ago Page
Visual Observing Manual - French BSJ 1 year 50 weeks ago Page
Atmospheric seeing conditions for solar observing Matthew Templeton 4 years 43 weeks ago Page
Visual Observing Manual - Hungarian BSJ 1 year 47 weeks ago Page
Online Resources for Beginning Observers BSJ 1 year 22 weeks ago Page
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