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News and Announcements
Friday, January 25, 2019 - 15:12
Alert Notice 660: Targets modified for LPV Maser campaign
Friday, January 25, 2019 - 12:47
Alert Notice 659: KQ Mon being observed with Chandra
Monday, January 14, 2019 - 14:34
Solar Bulletin - Volume 74, Number 12
Monday, December 24, 2018 - 09:20
JAAVSO volume 46, number 2, December 2018, print version now available
Friday, December 14, 2018 - 12:10
Solar Bulletin - Volume 74, Number 11
Friday, December 14, 2018 - 10:38
JAAVSO Volume 46 Number 2, 2018 is published
Monday, December 3, 2018 - 14:51
Alert Notice 658: EC 21178-5417 being observed with Chandra
Monday, December 3, 2018 - 11:06
LPV of the Month December, 2018
Friday, November 30, 2018 - 11:03
AAVSO Membership Meeting November 17th, 2018
Wednesday, November 21, 2018 - 08:29
Alert Notice 657: HerbigAeBe stars need monitoring for Chandra observations
Tuesday, November 20, 2018 - 12:30
Solar Bulletin - Volume 74, Number 10
Wednesday, November 7, 2018 - 14:26
Alert Notice 656: Chandra observation date revised for XZ Tau and HL Tau
Thursday, November 1, 2018 - 09:43
LPV of the Month November, 2018
Tuesday, October 30, 2018 - 14:31
Alert Notice 655: Anticipated secondary eclipse of b Persei by its third star in November 2018
Monday, October 29, 2018 - 16:59
Alert Notice 654: XZ Tau and HL Tau monitoring needed for Chandra observations
Friday, October 26, 2018 - 15:43
Alert Notice 653: Nova in Norma: N Nor 2018 = PNV J16143400-5330050
Wednesday, October 17, 2018 - 13:38
Solar Bulletin - Volume 74, Number 09
Monday, October 15, 2018 - 13:16
Gaia plugin for VStar
Thursday, October 11, 2018 - 15:44
Alert Notice 652: Monitoring of nova-like variables in support of Chandra observations
Monday, October 1, 2018 - 16:49
AAVSO Newsletter 78 is now online
Monday, October 1, 2018 - 11:29
AAVSO seeking an Editor for the Journal of the American Association of Variable Star Observers (JAAVSO)
Thursday, September 27, 2018 - 17:11
Alert Notice 651: Monitoring of T Pyx needed for HST observations
Friday, September 14, 2018 - 15:06
Alert Notice 650 - REVISED: Photometry and spectroscopy of more symbiotic candidates requested
Friday, September 14, 2018 - 14:48
Solar Bulletin - Volume 74, Number 08
Friday, August 31, 2018 - 15:24
LPV of the Month September, 2018
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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
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