AAVSOThe American Association of Variable Star Observers
Cambridge, Massachusetts
AAVSOObservers
The definition of backyard telescope has changed dramatically in the last decade
Amateur astronomers equipped with sophisticated telescopes and CCDs producing scientific results has become the norm
Transient Events
AAVSO observers obtained crucial early data for the outburst of V838 Mon, one of the most unusual novae this century
Collaboration
AAVSO observers notify astronomers using space telescopes of unusual or transient activity from the ground
The SWIFT satellite notifies AAVSO observers of gamma ray bursts
AAVSO Data The AAVSO International Database
contains over 19 million observations The database grows by nearly a million
observations per year Data like these are critical to stellar
research
VSX
The International Variable Star Index
Maintained by the AAVSO, VSX is the largest, most up to date single source for information on variable stars
New discoveries are constantly being added to the database
AAVSOnet
The AAVSO has robotic telescopes, including two ongoing photometric survey systems, available for professional and amateur research projects.
Telescopes range from 60mm to 0.6m
AAVSO Chart Software
Custom charts can be generated for any area of the sky in any field size, orientation or limiting magnitude.
AAVSO comparison star sequences utilize the best photometry available in the world.
Portal for Researchers
to facilitate your use of the AAVSO's resources in your research efforts
find information about obtaining AAVSO data
request new observations
learn more about the AAVSO, its data, and its services for the research community
Publications
The Journal of the AAVSO (JAAVSO)
CCD Observing Manual Visual Observing Manual Solar Bulletin Variable Star of the Season Annual Report AAVSO Newsletter
Membership Benefits Access to AAVSOnet, our robotic
telescope network Staff, observer and technical support for
observing campaigns Access to the Journal of the AAVSO and
the quarterly Newsletter Waiver of page charges in the Journal Access to special web-based tools and
information Discounted meeting registration Voting privileges
AAVSO Meetings
Members present their research; and exchange ideas about observing, techniques, problems and solutions
Annual fall meetings are held in Cambridge, Massachusetts Other recent US meetings- Tucson, AZ; Madison, WI; San Francisco, CA,
Waikoloa Beach, HI Recent International meetings- Mendoza, Argentina; Calgary, Canada;
Cambridge, England
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