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News and Announcements
Friday, December 1, 2017 - 12:19
Alert Notice 607: MASTER OT J132104.04+560957.8 photometry urgently needed for XMM observations
Friday, November 17, 2017 - 13:00
Alert Notice 606: Observing campaign on nova in Vela - ASASSN-17mt
Wednesday, November 15, 2017 - 14:45
Solar Bulletin - Volume 73, Number 10
Tuesday, November 14, 2017 - 16:44
Alert Notice 605: Nova in Ophiuchus - PNV J17184504-2454221
Thursday, November 2, 2017 - 12:58
Solar Observing Guide update
Tuesday, October 31, 2017 - 11:39
Alert Notice 604: CI Aql observations must be reported by 14:45 UT 2017 November 1
Friday, October 27, 2017 - 15:36
Alert Notice 603: CI Aql HST observation scheduled for November 2
Tuesday, October 17, 2017 - 14:36
Alert Notice 602: CE Tau Observations Requested to Supplement BRITE-Constellation
Monday, October 16, 2017 - 14:05
Solar Bulletin - Volume 73, Number 09
Tuesday, October 10, 2017 - 15:45
Alert Notice 601: V902 Mon observations needed to support XMM-Newton observation
Tuesday, October 3, 2017 - 11:12
AAVSO Newsletter 74 online
Sunday, October 1, 2017 - 19:01
Alert Notice 600: Dates for R Aqr Chandra and HST observations
Sunday, October 1, 2017 - 17:38
Alert Notice 599: CI Aql monitoring needed in support of HST observations
Monday, September 25, 2017 - 17:39
DSLR Observing Manual in Polish
Friday, September 15, 2017 - 13:57
Solar Bulletin - Volume 73, Number 08
Wednesday, September 6, 2017 - 20:08
Alert Notice 598: Intermediate polar FO Aqr fading and photometry needed now
Wednesday, September 6, 2017 - 19:04
Alert Notice 597: GW Lib time set for third HST observation
Thursday, August 31, 2017 - 17:02
Alert Notice 596: GW Lib time set for second HST observation
Thursday, August 24, 2017 - 15:42
Request Comparison Stars for Variable Star Charts
Thursday, August 24, 2017 - 15:25
How to report new variable star discoveries
Thursday, August 24, 2017 - 15:24
H-R Diagram Education Materials
Wednesday, August 23, 2017 - 14:08
Alert Notice 595: GW Lib time scheduled for first HST observation
Thursday, August 17, 2017 - 16:36
Alert Notice 594: Correction to Alert Notice 593
Tuesday, August 15, 2017 - 16:18
Solar Bulletin - Volume 73, Number 07
Friday, August 11, 2017 - 12:58
Alert Notice 592: V404 Cyg observations needed tonight for Chandra observations
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About Us
The Organization
Vision/Mission
Services
What We Do
History and Archives
Volunteer
Funds
Contact Us
By-Laws
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 Newsletter
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 Variable Stars: A Guide for Beginners
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
Charge-Coupled Device (CCD) Camera Photometry Guide
Digital Single Lens Reflex (DSLR) Camera Observing Manual
Exoplanet Observing Guide
PEP Observer's Guide
Solar Observing Guide
AAVSO Guide to Getting Started in Spectroscopy
WebObs (Search AID or Submit Your Data)
Variable Star Charts
Variable Star Plotter (VSP)
Report Chart Errors
Request Comparison Stars
Chart and Sequence Updates
AAVSO Target Tool
Observation Planner Tool
JD Calculator & Calendar
Software Directory
Data
For researchers: support and data access
AAVSO International Database (AID)
WebObs (Submit/Search Data)
Exoplanet Database
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
Historic Light Curves
The AAVSO Photometric All-Sky Survey (APASS)
AAVSOnet Epoch Photometry Database
AAVSOnet
Eggen Card Project
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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