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observing aids

Title Posted By Updated/commented datesort icon Type
Visual Observing Manual - Persian BSJ 31 weeks 1 day ago Page
Visual Observing Manual BSJ 31 weeks 1 day ago Page
Julian Date (JD) Calculator and Calendars BSJ 7 weeks 2 days ago Page
Program stars in need of observation Matthew Templeton 6 weeks 2 days ago Page
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