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The Journal of the AAVSO (JAAVSO)
The main variable star research publication of the AAVSO. The electronic version is called the eJAAVSO which includes any pre-print articles as they become available.
Variable Star of the Season (VSOTS)
A unique and colorful web publication that highlights a different variable star every season. Includes background, history, theoretical research, observing suggestions, and more.
The Bulletin
Predicted Dates of Maxima and Minima of Long Period Variables
Fundamental tool in planning your observing schedule each month. It contains predicted dates of maxima and minima in a schematic representaion.
Manual for Visual Observing of Variable Stars
The essential comprehensive guide to making variable star observations and reporting them to the AAVSO. Current translations include, French, Spanish, and Turkish with more on the way.
CCD Photometry Guide
Basic introduction and guide to using a Charge-Coupled Device (CCD) to perform photometry of variable stars. This is published on our website only.
JD Calendar
JD dates are explained and pdf calendars are available. Also convert from UT to JD and JD to UT.
AAVSO Newsletter
The AAVSO Newsletter is a periodic, general forum that supports our various observing programs with lists of new targets, observing programming ideas, and general information that spans a wide area of interest. Guest writers contribute pieces that can range from current events to book reviews.
AAVSO Annual Report
Directors' Reports
Solar Bulletin
Includes SID reports, sunspot reports, images, announcements, and more.
PEP Newsletter
Now part of the AAVSO Newsletter
Eyepiece Views
Now part of the AAVSO Newsletter
CCD Views
Now part of the AAVSO Newsletter
RR Lyrae Ephemerides
Eclipsing Binary Ephemerides
AAVSO Variable Star Bookstore
Selected books on variable stars, observing variable stars, stellar evolution and much more. Links to purchase them directly from amazon dot com benefits the AAVSO

AAVSO In Print
Linked list of papers published using AAVSO data

Variable star posters and talks by AAVSO staff

Observation Notification
MyNewsFlash: Customizable observation reports
Special Notice: Brief and timely alert of stellar activity
Alert Notice: More formal and detailed alerts

Forums: General, Help, Software, Campaigns, Photometry, and much more!
Chat Room
Discussion Groups: SID and Solar/Archives of inactive discussion groups

Advancing Variable Star Astronomy: The Centennial History of the AAVSO (hardcover)
Advancing Variable Star Astronomy: The Centennial History of the AAVSO (kindle e-book from
Dorrit Hoffleit's Autobiography
75th Anniversary Edition of the JAAVSO
Dorrit Hoffleit's essays, "Maria Mitchell's Famous Students" and "Comets Over Nantucket"
Women in the History of Variable Star Astronomy
The Education of Women Astronomers Before 1960
The Story of the AAVSO and AAVSO Observers and Observations 1911-1993
Some Stars, Some Music: The Memoirs of Clinton B. Ford
Variable Comments
AAVSO Abstracts
Monographs - Long term light curves of individual stars
Observed Minima Timings of Eclipsing Binaries

Observed Maxima Timings of RR Lyrae Stars

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