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News and Announcements
Wednesday, August 14, 2019 - 18:46
Alert Notice 676: Nova in Orion: N Ori 2019 = PNV J06095740+1212255
Monday, August 12, 2019 - 17:31
Solar Bulletin: Volume 75, Number 07
Friday, August 2, 2019 - 14:03
Alert Notice 675: V386 Ser - second rescheduling of HST observations
Thursday, July 25, 2019 - 11:31
Alert Notice 674: UU Aqr being observed with Chandra
Thursday, July 25, 2019 - 10:12
Alert Notice 673: SS Cyg photometry and spectroscopy requested to complement TESS monitoring
Friday, July 19, 2019 - 14:09
Alert Notice 672: Monitoring needed of KIC 8462852 (Tabby's Star)
Tuesday, July 16, 2019 - 21:40
Solar Bulletin: Volume 75, Number 6
Friday, July 12, 2019 - 15:33
Alert Notice 671: LQ Peg being observed with Chandra
Tuesday, July 9, 2019 - 15:11
Alert Notice 670: KIC 2856960 time series coverage needed now
Tuesday, July 2, 2019 - 10:07
JAAVSO volume 47, number 1, June 2019, print version now available
Friday, June 21, 2019 - 13:42
Alert Notice 669: V386 Ser HST observations rescheduled
Friday, June 21, 2019 - 13:03
Alert Notice 668: V1047 Cen (Nova Cen 2005) rebrightening
Monday, June 17, 2019 - 11:08
Solar Bulletin - Volume 75, Number 5
Saturday, June 15, 2019 - 00:20
JAAVSO Volume 47 Number 1, 2019 is published
Friday, June 14, 2019 - 13:30
Charts and Sequences Update - June 2019
Monday, May 20, 2019 - 16:47
Alert Notice 667: V386 Ser to be observed with HST
Tuesday, May 14, 2019 - 15:11
Alert Notice 666: CRTS J105122.8+672528 observations needed urgently
Monday, May 13, 2019 - 13:08
Solar Bulletin - Volume 75, Number 4
Wednesday, May 1, 2019 - 10:03
AAVSO Annual Campaign 2019 – Cultivating the Future
Friday, April 19, 2019 - 13:32
Alert Notice 665: R Aqr observations needed urgently
Monday, April 15, 2019 - 10:13
Solar Bulletin Volume 75, Number 3
Wednesday, April 3, 2019 - 18:15
Alert Notice 664: Monitoring recurrent nova U Sco to discover its imminent eruption
Wednesday, March 13, 2019 - 08:36
Solar Bulletin Volume 75, Number 2
Friday, March 8, 2019 - 19:19
Alert Notice 663: 1SWASP J022916.91-395901.4 being observed with Chandra
Wednesday, February 20, 2019 - 11:44
Alert Notice 662: V818 Sco (Sco X-1) multiwavelength campaign
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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
The Location
AAVSO Headquarters
Directions
Guest Suite
Our Publications
Annual Report
Journal of the AAVSO
AAVSO Alert Notice
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
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
CCD Photometry Guide
DSLR Observing Manual
Exoplanet Observing Guide
PEP Observer's Guide
Solar Observing Guide
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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