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News and Announcements
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
Friday, August 24, 2018 - 16:47
Alert Notice 649: Dwarf nova outburst of GK Per (N Per 1901)
Tuesday, August 14, 2018 - 16:53
Alert Notice 648: Semiregular variable reclassified as symbiotic: outburst of ASASSN-V J195442.95+172212.6 = Vend47 (Sge)
Tuesday, August 14, 2018 - 10:53
Solar Bulletin - Volume 74, Number 07
Monday, August 13, 2018 - 17:05
Alert Notice 647: Nova in Ophiuchus - N Oph 2018 No. 3 = PNV J17422408-2053088
Monday, August 6, 2018 - 15:09
Alert Notice 646: VW Hyi in outburst and monitoring needed for multiwavelength campaign
Wednesday, August 1, 2018 - 08:58
LPV of the Month August, 2018
Tuesday, July 31, 2018 - 13:22
Alert Notice 645: Monitoring of LPVs for Maser Study
Friday, July 27, 2018 - 17:37
Alert Notice 644: FO Aqr monitoring requested in faint-state study
Wednesday, July 25, 2018 - 14:24
Alert Notice 643: Monitoring for Red Dots #2 campaign
Tuesday, July 24, 2018 - 16:43
Alert Notice 642: ASASSN-18pe observing campaign
Tuesday, July 24, 2018 - 12:43
Alert Notice 641: V1490 Cyg multiwavelength campaign
Monday, July 16, 2018 - 12:41
Solar Bulletin - Volume 74, Number 06
Thursday, July 5, 2018 - 00:00
Alert Notice 640: Immediate Monitoring of VW Hyi Requested
Tuesday, July 3, 2018 - 13:39
AAVSO Newsletter 77 is online
Tuesday, July 3, 2018 - 12:30
Alert Notice 639: CH Cyg coverage requested
Monday, July 2, 2018 - 15:51
Alert Notice 638: Nova in Scutum - N Sct 2018 = TCP J18292290-1430460
Monday, July 2, 2018 - 09:12
LPV of the Month July, 2018
Thursday, June 28, 2018 - 09:43
JAAVSO volume 46, number 1, June 2018, print version now available
Friday, June 15, 2018 - 16:41
Solar Bulletin - Volume 74, Number 05
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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)
Observing Sections
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