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Topic 9: The atmosphere Arne Henden Director, AAVSO [email protected].
VARIABLE STAR TYPE DESIGNATIONS IN VSX - AAVSO | American
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AAVSO Citizen Sky DSLR Photometry Workshop
Wir im marchfeld 0514 gesamtausgabe nieder aufgelöst
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March 2007 Dear Observers, AAVSO Bulletin 70, predicted ...HOW TO USE AAVSO BULLETIN 70 FOR 2007 The AAVSO Bulletin is essential in planning your observing schedule each month. It