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News and Announcements
Friday, May 12, 2017 - 16:59
Solar Bulletin - Volume 73, Number 04
Friday, May 12, 2017 - 10:55
Solar Observing Guide - in French
Thursday, May 11, 2017 - 16:23
Alert Notice 576: Nova in Ophiuchus - TCP J17394608-2457555
Tuesday, May 2, 2017 - 15:39
Special Notice #429: V694 Mon (MWC 560) spectroscopy requested
Friday, April 28, 2017 - 15:40
Alert Notice 575: Monitoring of Swift J1357.2-0933 (CRTS J135716.8-093238) requested
Friday, April 28, 2017 - 11:47
Introducing... The AAVSO Solar Observing Guide
Tuesday, April 25, 2017 - 09:00
Alert Notice 574: Monitoring of EPIC 204278916 requested
Wednesday, April 19, 2017 - 15:04
Solar Bulletin - Volume 73, Number 03
Thursday, April 6, 2017 - 13:34
Alert Notice 573: V2492 Cyg monitoring requested in support of XMM observations
Monday, April 3, 2017 - 17:46
AAVSO Newsletter 72, April 2017, is published
Monday, April 3, 2017 - 12:00
Alert Notice 572: AG Dra monitoring requested
Wednesday, March 22, 2017 - 14:50
Adopt A Variable Star Program
Thursday, March 16, 2017 - 16:53
Alert Notice 571: Observations Requested of Exoplanet Proxima Centauri b
Monday, March 13, 2017 - 13:12
Solar Bulletin - Volume 73, Number 02
Tuesday, March 7, 2017 - 15:00
Alert Notice 570: NR TrA (Nova TrA 2008) monitoring in support of XMM observations
Monday, March 6, 2017 - 16:42
AAVSO Annual Report for 2015-2016 online
Tuesday, February 28, 2017 - 17:21
AAVSO Bulletin 80 for 2017 online
Wednesday, February 15, 2017 - 13:54
Alert Notice 569: Monitoring 1SWASP J162117.36+441254.2 for HST observations
Tuesday, February 14, 2017 - 16:11
January 2017 Solar Bulletin
Monday, February 13, 2017 - 14:41
Alert Notice 568: Nova in Scorpius - PNV J16521887-3754189 [V1657 Sco]
Friday, February 10, 2017 - 20:29
Alert Notice 567: IM Nor monitoring requested for HST COS observations
Wednesday, February 1, 2017 - 15:25
AAVSO Newsletter 71, January 2017, is published
Tuesday, January 31, 2017 - 11:36
AAVSO Alert Notice 566: Beta Pic observations requested for BRITE-Constellation
Wednesday, January 25, 2017 - 16:10
Special Notice #428: YZ Cnc Chandra observing window delayed
Monday, January 23, 2017 - 12:17
Special Notice #427: Please continue YZ Cnc coverage for Chandra TOO 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
Board: 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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