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News and Announcements
Friday, May 9, 2014 - 15:04
Special Notice #384: SBS 1108+574 HST/COS obs next week
Friday, May 9, 2014 - 09:27
New eJAAVSO preprint: Seven Years of Globe at Night Data
Tuesday, April 29, 2014 - 14:37
Alert Notice 501: Monitoring requested for HST/COS observations of SBS 1108+574
Thursday, April 17, 2014 - 12:02
Solar Bulletin - Volume 70, Number 03
Thursday, April 3, 2014 - 14:59
AAVSO Newsletter 60 is now published
Wednesday, April 2, 2014 - 11:53
Alert Notice 500: Novae in Scorpius and Cygnus [V1534 Sco, V2659 Cyg]
Thursday, March 27, 2014 - 17:41
Special Notice #383: Transient in Scorpius = TCP J17154683-3128303 [V1534 Sco]
Monday, March 24, 2014 - 16:43
The AAVSO International Database Breaks Twenty-Five Million Observations!
Monday, March 17, 2014 - 12:28
Special Notice #382: SDSS J100658.40+233724.4 observations crucial now
Friday, March 14, 2014 - 18:19
Alert Notice 499: Predicted occultation of Regulus
Friday, March 14, 2014 - 13:17
Solar Bulletin - Volume 70, Number 02
Monday, March 10, 2014 - 17:32
Alert Notice 498: Nova Cephei 2014 = TCP J20542386+6017077 [V962 Cep]
Thursday, March 6, 2014 - 12:30
Annual Report for 2012-2013 is now online
Wednesday, March 5, 2014 - 15:42
Special Notice #381: HST/COS observations of SDSS J100658.40+233724.4
Thursday, February 27, 2014 - 11:00
AAVSO Bulletin 77 for 2014
Friday, February 21, 2014 - 15:21
Asteroids Mikesimonsen and Mariomotta
Tuesday, February 18, 2014 - 09:16
New CHOICE courses offered for spring
Tuesday, February 11, 2014 - 12:03
Alert Notice 497: Nova Sagittarii 2014 = PNV J18250860-2236024 [V5666 Sgr] AND Erratum
Friday, February 7, 2014 - 16:23
Alert Notice 496: Outburst of the recurrent nova V745 Sco
Thursday, February 6, 2014 - 16:04
Aviso Especial #380: Erupción reportada de la nova recurrente V0745 Sco
Thursday, February 6, 2014 - 14:01
Special Notice #380: Reported outburst of the recurrent nova V0745 Sco
Monday, February 3, 2014 - 11:01
La IAU le asigna a asteroides el nombre de importantes observadores de AAVSO
Friday, January 31, 2014 - 14:18
IAU Names Asteroids for Prominent AAVSO Observers
Wednesday, January 22, 2014 - 17:45
Alerta de AAVSO 495: Brillante supernova de tipo Ia PSN J09554214+6940260 y campaña de observación
Wednesday, January 22, 2014 - 15:58
Alert Notice 495: Bright Type-Ia Supernova PSN J09554214+6940260 and Observing 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
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
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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