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How to navigate our new AAVSO website:

6-minute video tour

https://www.youtube.com/watch?v=71y9Q3ei_3M

Welcome to the AAVSO!

New explorers are welcome.
YOU can be an astronomer.

https://www.youtube.com/watch?v=tgCB2lBRk8s&t=5s

AAVSO 2021 Webinars and How-to Hours

Sign up for any to all of these!

April's variable star and observing guide

Explore R LEONIS of LEO with us! Monthly episodes include a video, finder chart, observing tips for the beginner.

A collaboration of the AAVSO, Ball State University, and the International Planetarium Society

https://www.aavso.org/featured-variables

A huge heartfelt "thank you!" to all of our volunteers! Watch our social media for our daily special shout-outs!

Happy Global Volunteer Month!

https://www.aavso.org/sites/default/files/education/presentations/AAVSO%20Poster%20-%20volunteers2020.pdf

Read personal stories from our members on how they became interested in astronomy and the AAVSO! Do YOU have a story? Send it to Gordon Myers at president@aavso.org!

https://www.aavso.org/sites/default/files/AAVSO%20pdfs/AAVSO-Member-Stories.pdf

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

Data

Submit and Access Data

Telescope

Tools and Observer Resources

Observing Sections

Observing Sections

/observing-sections

Education

Education

CHOICE Courses, Manuals, Videos

Shop

Shop

https://shop.spreadshirt.com/aavso/

Join and Support

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:

4 4 , 6 4 9 , 6 8 8 and Counting ...

Last Observation Received:

1 min 52 sec ago by SHS - Steven Sharpe (CA)

1242+04 Apr 15.0659 11.748V

Plot 1242+04 light curve

Solar Bulletin - Volume 77, Number 03

Apr 16

Alert Notice 740: Nova in Scorpius: V1710 Sco = N Sco 2021 = ASASSN-21fh = PNV J17091000-3730500

Apr 14

Alert Notice 739: Nova in Sagittarius: N Sgr 2021 No. 2 = PNV J17581670-2914490 [V6595 Sgr]

Apr 6

LPV of the Month, April 2021: R Leonis

Apr 5

Alert Notice 738: R Aqr monitoring needed in support of Chandra and HST observations

Apr 5

Our Stellar Partners

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