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MQ Cas is now in a flash state
V386 Ser to be observed with HST
V386 Ser to be observed with HST
Campaign on six nova-like variables
Gaia Archive
What does AstroImageJ software do? NewB advice needed.
MQ Cas flash
Mu Cep
Webobs upload not possible
Older Version of LCG does not work
ASASSN-19mo: classical nova (13.0 mag) in Scorpius
AAVSOnet Status, 2019-08-01
SS Cyg in the TESS field - please observe!
FLARE STAR IN CYGNUS
Star Flare in Andromeda
How to... First step
TCP J05293666-7009566: possible nova (12.6 mag) in the Large Magellanic Cloud
Stacking bug
Can't stack
Campaign on KIC 8462852
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About Us
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History
The AAVSO Archives
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Contact Us
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Council: Officers and Members
Staff
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In Memoriam
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AAVSO Headquarters
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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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