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New Kepler/TESS Plugin Available

VPHOT Processing Queue

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President's letter December, 2019

2020 AAVSO online CHOICE courses

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Dennis Conti Honored

AAVSO observer Dennis Conti received the 2020 AAS Chambliss Amateur Achievement Award "for his outstanding observational, computational, and educational contributions to exoplanet studies."

AAVSO Selected to Participate in Harvard Business School Association of Boston’s Community Action Partners Program

Are you an undergrad or grad student? Volunteer as an AAVSO Ambassador!

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Recent Activity

Variable Star Observations in Database:

40,470,267 and Counting ...

Last Observation Received:

1 min 18 sec ago by SRIC - Richard Sabo (US)

HT CAM Jan 27.2749 16.720CV

Plot HT CAM light curve

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

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Information For

Active forum topics

From our Leadership

2020 AAVSO online CHOICE courses

Dennis Conti Honored

AAVSO Selected to Participate in Harvard Business School Association of Boston’s Community Action Partners Program

Are you an undergrad or grad student? Volunteer as an AAVSO Ambassador!

Pick a Star

We gratefully acknowledge support from the Friends of the AAVSO: