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News and Announcements
Monday, June 26, 2017 - 10:36
JAAVSO volume 45, number 1, June 2017, print version now available
Wednesday, June 21, 2017 - 14:57
Alert Notice 584: Monitoring of PDS 110 requested to cover upcoming eclipse by exoplanet
Friday, June 16, 2017 - 11:13
Alert Notice 583: Photometry requested for Red Dots campaign
Thursday, June 15, 2017 - 17:51
Alert Notice 582: Nova Oph 2017 photometry requested for Swift TOO observations
Thursday, June 15, 2017 - 12:10
Solar Bulletin - Volume 73, Number 05
Thursday, June 15, 2017 - 09:33
JAAVSO Volume 45 Number 1 2017 is published
Thursday, June 8, 2017 - 19:15
Alert Notice 581: Monitoring HD 148703 during upcoming eclipses
Wednesday, June 7, 2017 - 10:36
Visual Observing Manual in Russian
Thursday, May 25, 2017 - 11:16
DSLR Observing Manual in French
Wednesday, May 24, 2017 - 14:49
Alert Notice 580: ASASSN-17fp rebrightening event and ongoing monitoring
Wednesday, May 24, 2017 - 13:37
Alert Notice 579: KIC 8462852 optical dipping event
Tuesday, May 23, 2017 - 17:27
Alert Notice 578: Nova in Centaurus - ASASSN-17gk
Tuesday, May 16, 2017 - 13:59
Alert Notice 577: SN 2017eaw in NGC 6946 (PSN J20344424+6011359)
Friday, May 12, 2017 - 16:59
Solar Bulletin - Volume 73, Number 04
Friday, May 12, 2017 - 10:55
Solar Observing Guide - in French
Thursday, May 11, 2017 - 16:23
Alert Notice 576: Nova in Ophiuchus - TCP J17394608-2457555
Tuesday, May 2, 2017 - 15:39
Special Notice #429: V694 Mon (MWC 560) spectroscopy requested
Friday, April 28, 2017 - 15:40
Alert Notice 575: Monitoring of Swift J1357.2-0933 (CRTS J135716.8-093238) requested
Friday, April 28, 2017 - 11:47
Introducing... The AAVSO Solar Observing Guide
Tuesday, April 25, 2017 - 09:00
Alert Notice 574: Monitoring of EPIC 204278916 requested
Wednesday, April 19, 2017 - 15:04
Solar Bulletin - Volume 73, Number 03
Thursday, April 6, 2017 - 13:34
Alert Notice 573: V2492 Cyg monitoring requested in support of XMM observations
Monday, April 3, 2017 - 17:46
AAVSO Newsletter 72, April 2017, is published
Monday, April 3, 2017 - 12:00
Alert Notice 572: AG Dra monitoring requested
Wednesday, March 22, 2017 - 14:50
Adopt A Variable Star Program
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About Us
The Organization
Vision/Mission
What We Do
Services
Work & Research
Volunteer
History
The AAVSO Archives
By-Laws
Contact Us
The People
Council: Officers and Members
Staff
Section Leaders
Honors & Awards
In Memoriam
Outreach
Presentation Library
Writers Bureau
The Location
AAVSO Headquarters
Directions
Guest Suite
Our Publications
Annual Report
Journal of the AAVSO
Alert and Special Notices
AAVSO Newsletter
Visual Observing Manual
CCD Photometry Guide
DSLR Observing Manual
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 Variables
Variable Star of the Season
Educational Materials
CHOICE Online Institute
CCD School Videos
Student Projects
Two Eyes, 3D
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
Observing Manuals
Visual Observing Manual
CCD Photometry Guide
DSLR Observing Manual
Exoplanet Observing Guide
PEP Observer's Guide
Solar Observing Guide
Alert and Special Notices
Observing Campaigns
WebObs (Search AID or Submit Your Data)
Variable Star Charts
Variable Star Plotter (VSP)
Report Chart Errors
Request Comparison Stars
AAVSO Target Tool
Observation Planner Tool
JD Calculator & Calendar
Software Directory
Data
AAVSO International Database (AID)
Portal for Researchers
Historic Light Curves
Eggen Card Project
WebObs (Submit/Search Data)
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
The AAVSO Photometric All-Sky Survey (APASS)
AAVSOnet Epoch Photometry Database
AAVSOnet
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)
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