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News and Announcements
Tuesday, April 30, 2013 - 16:08
Special Notice #349: HST/COS Observations CANCELLED for SDSS J154453.60+255348.8
Tuesday, April 30, 2013 - 05:33
New VStar Release
Sunday, April 28, 2013 - 09:46
Optical observations of GRB 130427A
Monday, April 22, 2013 - 09:07
Special Notice #348: QZ Lib observations critical now for HST/COS and SDSS J154453.60+255348.8 next target
Thursday, April 18, 2013 - 09:27
Data Usage Guidelines
Wednesday, April 17, 2013 - 15:27
Spring Meeting Hotel Deadline Extended!
Wednesday, April 17, 2013 - 12:42
Solar Bulletin - Volume 69, Number 3
Tuesday, April 16, 2013 - 09:28
Annual Report for 2011-2012 is published
Thursday, April 11, 2013 - 09:28
The AAVSO Newsletter - April 2013 - is published
Tuesday, April 9, 2013 - 14:47
Special Notice #347: Correction to AAVSO Special Notice #346
Monday, April 8, 2013 - 21:32
Special Notice #346: RZ Leo observations critical now for HST/COS and IU Leo next target
Thursday, April 4, 2013 - 15:08
Charts and Sequences Update April 2013
Wednesday, April 3, 2013 - 16:10
102nd Spring Meeting of the AAVSO
Wednesday, April 3, 2013 - 15:53
Alert Notice 482: Monitoring requested for dust production study in developing planetary systems
Tuesday, April 2, 2013 - 09:05
Special Notice #345: MR UMa observations needed now and RZ Leo next HST/COS target
Wednesday, March 27, 2013 - 12:50
AAVSO Solar Bulletin 1945-1953
Monday, March 25, 2013 - 13:58
Special Notice #344: IY UMa and MR UMa next HST/COS targets
Tuesday, March 19, 2013 - 12:45
Alert Notice 481: Nova Survey participation requested
Monday, March 18, 2013 - 19:10
Special Notice #343: GK Per outburst appears to be underway
Monday, March 18, 2013 - 16:51
Special Notice #342: PU CMa, then IY UMa and MR UMa next HST/COS targets
Monday, March 18, 2013 - 10:54
New CHOICE Courses: Final days of registration!
Thursday, March 14, 2013 - 17:35
Special Notice #341: V485 Cen observations crucial tonight through Sunday night
Wednesday, March 13, 2013 - 17:46
Solar Bulletin - Volume 69, Number 2
Tuesday, March 12, 2013 - 10:16
Manual for Visual Observing of Variable Stars - update
Friday, March 8, 2013 - 15:34
Alert Notice #480: MR UMa superoutburst coverage requested for HST observations
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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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