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News and Announcements
Friday, February 15, 2013 - 13:15
Special Notice #337: Bright transient near the galaxy NGC 5643 (Lupus) [SN 2013aa]
Tuesday, February 12, 2013 - 21:24
Special Notice #336: Next three HST/COS CV campaign targets
Tuesday, February 12, 2013 - 16:32
Special Notice #335: Revised Coordinates for GR Ori (Nova Ori 1916)
Monday, February 11, 2013 - 09:25
Special Notice #334: Outburst of the possible old nova GR Ori
Wednesday, February 6, 2013 - 12:25
Special Notice #333: Eclipse underway in b Per and photometry needed urgently
Tuesday, February 5, 2013 - 20:37
Special Notice #332: Observations of IR Com crucial now through February 8
Tuesday, February 5, 2013 - 01:24
Star names containing the Greek letters µ and ν, and the case of “u” versus “U”
Saturday, February 2, 2013 - 23:44
Special Notice #331: Nova Cephei 2013 = PNV J23080471+6046521 [V809 Cep]
Saturday, February 2, 2013 - 00:50
Special Notice #330: Next HST/COS targets are IR Com and BB Dor
Tuesday, January 29, 2013 - 14:32
Special Notice #329: Critical time for CV Campaign HST/COS target SDSS J100515.38+191107.9
Tuesday, January 29, 2013 - 14:14
Special Notice #328: HST/COS observing U Gem 2013 January 30
Thursday, January 24, 2013 - 17:49
Special Notice #327: HST/COS observations scheduled for U Gem
Thursday, January 24, 2013 - 17:08
Special Notice #326: Next HST/COS target is SDSS J100515.38+191107.9
Tuesday, January 22, 2013 - 23:02
2013 Eclipsing Binary Ephemeris online
Monday, January 21, 2013 - 16:50
Special Notice #325: BB Dor monitoring requested for Swift and HST observations
Monday, January 21, 2013 - 14:22
Special Notice #324: LT Eri (SDSS J040714.78-064425.1) is next HST COS target
Thursday, January 17, 2013 - 15:56
The AAVSO Newsletter - January 2013 - is published
Wednesday, January 16, 2013 - 11:31
Alert Notice 478: Transformed photometry of young stars in Cha requested
Tuesday, January 15, 2013 - 14:17
Solar Bulletin - Volume 68, Number 12
Monday, January 14, 2013 - 22:39
Special Notice #323: Observations of BB Dor requested
Monday, January 14, 2013 - 14:54
Special Notice #322: CU Vel is next HST COS target
Thursday, January 10, 2013 - 16:55
Special Notice #321: Observations critical tonight for SDSS J093249.57+472523.0
Wednesday, January 9, 2013 - 17:36
Alert Notice 477: Supernova 2013E in IC 2532 = PSN J10000552-3414013
Wednesday, January 9, 2013 - 16:01
Special Notice #320: CH Cygni monitoring campaign continues
Friday, January 4, 2013 - 13:30
Alert Notice 476: Multicolor photometry of triple system b Per requested
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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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