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News and Announcements
Wednesday, April 29, 2020 - 12:45
Charts and Sequences Updates
Wednesday, April 1, 2020 - 11:51
Alert Notice 703: TCP J21040470+4631129 images, photometry, and spectroscopy urgently requested - REVISED
Friday, March 27, 2020 - 09:30
Alert Notice 702: TCP J21040470+4631129 to be observed with HST
Thursday, February 27, 2020 - 11:46
LPV of the Month: March 2020 - SS Cru
Monday, February 24, 2020 - 18:21
Alert Notice 701: Nova in Serpens: Nova Ser 2020 = N Ser 2020 = TCP J18104219-1534184 [V670 Ser]
Monday, February 24, 2020 - 11:42
Alert Notice 700: EE Cep observing campaign 2020-2021
Friday, February 14, 2020 - 17:15
Alert Notice 699: V386 Ser HST observing schedule revised
Friday, February 14, 2020 - 11:31
Solar Bulletin - Volume 76, Number 01
Friday, February 7, 2020 - 13:59
Alert Notice 698: V386 Ser to be observed with HST
Tuesday, February 4, 2020 - 15:02
Alert Notice 697: Nova in Sagittarius: V6566 Sgr = N Sgr 2020 = PNV J17561375-2942546
Monday, February 3, 2020 - 15:07
Alert Notice 696: R Aqr photometry (especially B) and spectroscopy needed
Monday, February 3, 2020 - 11:17
AAVSO Annual Report for 2018-2019 online
Monday, February 3, 2020 - 11:15
Alert Notice 695: HST to observe V694 Mon (MWC 560)
Friday, January 31, 2020 - 13:56
Alert Notice 694: Spectroscopy of gamma Cas requested
Thursday, January 30, 2020 - 14:00
Star of the Month - February 2020 - Alpha Ori
Friday, January 24, 2020 - 18:07
Alert Notice 693: V582 Mon monitoring requested
Wednesday, January 22, 2020 - 15:28
Alert Notice 692: V694 Mon (MWC 560) to be observed with Chandra
Monday, January 13, 2020 - 21:35
Solar Bulletin - Volume 75, Number 12
Wednesday, January 8, 2020 - 11:24
Alert Notice 691: Request for immediate photometric monitoring of the fading star ASASSN-V J060000.76-310027.83
Monday, January 6, 2020 - 16:36
Alert Notice 690: Rare very faint minimum of Betelgeuse (alpha Ori)
Friday, January 3, 2020 - 14:14
Alert Notice 689: R Aqr monitoring needed in support of HST and Chandra observations
Monday, December 30, 2019 - 08:50
LPV of the Month - January 2020 - RS Cnc
Friday, December 27, 2019 - 10:51
JAAVSO volume 47, number 2, December 2019, print version now available
Friday, December 20, 2019 - 13:11
Alert Notice 688: Anticipated primary eclipse of b Persei in January 2020
Wednesday, December 18, 2019 - 13:32
JD Calendar for 2020
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About Us
The Organization
Vision/Mission
Services
What We Do
History and Archives
Volunteer
Funds
Contact Us
By-Laws
The People
Board: Officers and Members
Staff
Section Leaders
Honors & Awards
In Memoriam
Outreach
Presentation Library
The Location
AAVSO Headquarters
Directions
Guest Suite
Our Publications
Annual Report
Journal of the AAVSO
AAVSO Newsletter
Solar Bulletin
plus many more...
Apply for Membership
Renew Membership
Community
Meetings
Forums
Find a Member/Observer
Who's Online
Variable Stars
What Are They & Why Observe Them?
The Stories Variables Tell
Types of Variable Stars: A Guide for Beginners
Educational Materials
CHOICE Online Institute
CCD School Videos
Student Projects
Variable Star Astronomy
H-R Diagram Plotting Activity
Reporting Variable Star Discoveries
Variable Star Index (VSX)
AAVSO in Print - Publications Using AAVSO Data
Observing
Observing at a Glance
Observing Sections
Alert Notices & Observing Campaigns
Observing Manuals
Visual Observing Manual
Charge-Coupled Device (CCD) Camera Photometry Guide
Digital Single Lens Reflex (DSLR) Camera Observing Manual
Exoplanet Observing Guide
PEP Observer's Guide
Solar Observing Guide
AAVSO Guide to Getting Started in Spectroscopy
WebObs (Search AID or Submit Your Data)
Variable Star Charts
Variable Star Plotter (VSP)
Report Chart Errors
Request Comparison Stars
Chart and Sequence Updates
AAVSO Target Tool
Observation Planner Tool
JD Calculator & Calendar
Software Directory
Data
For researchers: support and data access
AAVSO International Database (AID)
WebObs (Submit/Search Data)
Exoplanet Database
Data Access
Download Data in ASCII Form
Light Curve Generator (LCGv2)
Light Curve Generator (LCGv1)
MyNewsFlash - Real-Time Data Delivery
WebObs Search (Search the AID)
Data Analysis
Transformation
VPHOT - Online Photometry Tool
Zapper - Help Validate Data
VStar - Java Visualization & Analysis Tool
Historic Light Curves
The AAVSO Photometric All-Sky Survey (APASS)
AAVSOnet Epoch Photometry Database
AAVSOnet
Eggen Card Project
Getting Started
What Are Variable Stars?
Things to Do
Find a Mentor
Online Forum for Help and Advice
Observing Tutorials
10-Star Tutorial (Visual Observations of Variable Stars)
5-Star Tutorial (Data Analysis)
Observing Sections
AAVSO
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aavso@aavso.org
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