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Webinar | Things I Thought I’d Never See

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

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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 , 4 4 6 , 2 7 6 and Counting ...

Last Observation Received:

3 min 44 sec ago by TRE - Ray Tomlin (US)

ZTF J000247.42+632551.3 Nov 30.1194 14.295I

Plot ZTF J000247.42+632551.3 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

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

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