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observing manual

Solar Observing Guide in Portuguese

Thanks to observer and volunteer, Alexandre Amorim from Brazil, we now have available a Portuguese translation of the AAVSO Solar Observing Guide available for download (free-of-charge). This helpful Guide explains how to observe and report sunspot counts in a safe and scientifically useful manner.

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484