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Thank You All for a Great Time!

The Annual Meeting was a great success. A big "thank you" to speakers, sponsors and attendees.

https://www.aavso.org/113

Webinar | Things I Thought I’d Never See

Presenter: Bob King | Saturday, December 7 at 2p.m. ET | Pre-Registration Required.

https://us02web.zoom.us/webinar/register/9217299562829/WN_U_yVT5RKQXWCTAovTByNTA

Donate to the AAVSO!

Your support will provide opportunities that will influence generations of observers.

https://www.aavso.org/annual-campaigns/2025-annual-campaign?utm_source=slider&utm_medium=web&utm_campaign=ac25&utm_content=hps241112

Discover the AAVSO

An international community

Welcome to the conversation.

We are excited to announce a transition to a new forum system. The new system is modern, faster, and easier-to-use.

https://forums.aavso.org/

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The mission of the AAVSO is to enable anyone, anywhere to participate in scientific discovery through variable star astronomy.

Resources

(VSX) Variable Star Index

jaavso

The Journal of the AAVSO

/index.php/apps/jaavso

Data

Submit and Access Data

/index.php/databases

Telescope

Tools and Observer Resources

/index.php/observers

Observing Sections

Observing Sections

/index.php/observing-sections

Education

Education

CHOICE Courses, Manuals, Videos

/index.php/education

AAVSO In the Press

AAVSO In the Press

/index.php/press

Membership and Support

/index.php/join-aavso

The AAVSO is an equal opportunity and discrimination / harassment free environment.
Please read our policies HERE

AAVSO at a Glance

Variable Star Observations in Database:

6 5 , 3 0 0 , 6 7 1 and Counting ...

Last Observation Received:

26 sec ago by MJZ - Juan Manzorro (ES)

V0545 Cas Nov 10.9034 11.3Vis.

Plot V0545 Cas light curve

Board Election Results

Nov 19

Director's Report - 2024-Q3

Oct 23

Clinton B. Ford Observatory Destroyed by Fire

Oct 7

What to Do During the Eruption of T CrB

Sep 17

2024 Proposed Bylaw Revisions

Sep 13

Our Stellar Partners

orange circle with with snake next to the words "The Astropy Project"

$Diffraction Limited logo of a swirled circle with text: Diffraction: Astronomy + Scientific Imaging SolutionsIm$

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Text reads "Sky & Telescope" with the ampersand in a circle.