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AAVSO at a Glance
6 2 , 4 3 5 , 9 0 0 and Counting ...
Last Observation Received:
NSV 18598 Mar 3.9351...
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Welcome to AAVSO! | aavso
Remember:
Why observe variable stars (and yes, you can do it too!) AAVSO board member Bill Stein and the Astronomical League presents why variable star observing is such an important facet of astrono...
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Data Access | aavso
visual magnitude estimates made from digital images
Data currently in the AID are exclusively optical and NIR photometry; the AID does not include other multiwavelength photometry or spectroscopy, and...
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The AAVSO International Database (AID) | aavso
The AAVSO International Database (AID) has tens of millions variable star observations going back over one hundred years. It is the largest and most comprehensive digital variable star database of...
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Databases | aavso
Thanks to The Gordon and Betty Moore Foundation for their support of AVSpec.
"The Gordon and Betty Moore Foundation fosters path-breaking scientific discovery, environmental conservation, patient ca...
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The AAVSO Research Portal | aavso
Welcome to the AAVSO's
Research Portal. From this page, you can find information about obtaining AAVSO data, requesting new observations, or learning more about the AAVSO, its data, and its services...