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Not all of my data on the LCGv2 chart

Work Flow for DSLR Photometry ?

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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."

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2020 AAVSO online CHOICE courses

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

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President's letter December, 2019

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Recent Activity

Variable Star Observations in Database:

40,446,735 and Counting ...

Last Observation Received:

17 min 32 sec ago by KKAA - Karsten Klindt-Jensen (DK)

V BOO Jan 22.9486 8.9Vis.

Plot V BOO 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

Dennis Conti Honored

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

2020 AAVSO online CHOICE courses

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

From our Leadership

Pick a Star

We gratefully acknowledge support from the Friends of the AAVSO: