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observing aids

Title Posted Bysort icon Updated/commented date Type
Visual Observing Manual - Persian BSJ 39 weeks 6 days ago Page
Visual Observing Manual BSJ 39 weeks 6 days ago Page
Computing the JD or UT BSJ 4 years 15 weeks ago Page
2012 JD Calendar BSJ 3 years 14 weeks ago Page
CCD Views June 2001 Aaron Price 4 weeks 12 hours ago Page
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