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News and Announcements
Tuesday, September 15, 2020 - 11:48
Solar Bulletin - Volume 76, Number 08
Sunday, September 13, 2020 - 11:25
Alert Notice 720: Photometry requested for SS Cyg
Monday, August 31, 2020 - 16:32
LPV of the month - September 2020 - CH Cyg
Wednesday, August 26, 2020 - 19:31
Alert Notice 719: Light curves for symbiotic star ASAS J190559-2109.4
Wednesday, August 26, 2020 - 11:04
Alert Notice 718: Monitoring requested for Aquila X-1 (V1333 Aql) outburst
Monday, August 17, 2020 - 07:30
Alert Notice 717: Flaring of blazar S5 1803+78 continues
Friday, August 14, 2020 - 17:55
Alert Notice 716: XMM-Newton observing five T Tau stars
Thursday, August 13, 2020 - 23:15
Alert Notice 715: N Cas 2020 = TCP J00114297+6611190
Thursday, August 6, 2020 - 11:57
Alert Notice 714: TCP J21040470+4631129 to be observed with HST
Monday, August 3, 2020 - 15:52
Alert Notice 713: Unusual Nova in Aquila: N Aql 2020 No. 2 = AT 2020qpq = PGIR20eig
Monday, July 20, 2020 - 09:44
JAAVSO volume 48, number 1, June 2020, print version now available
Friday, July 17, 2020 - 11:37
Alert Notice 712: Nova in Sagittarius: N Sgr 2020 No. 3 = PNV J17580848-3005376
Thursday, July 16, 2020 - 15:37
Alert Notice 711: Nova in Reticulum: MGAB-V207 = N Ret 2020 [YZ Ret]
Thursday, July 16, 2020 - 14:28
Solar Bulletin - Volume 76, Number 06
Tuesday, July 14, 2020 - 12:20
Alert Notice 710: Monitoring requested for UXOR ASASSN-V J181654.06-202117.6
Thursday, July 2, 2020 - 16:03
Alert Notice 709: Supernova in NGC 4457 - SN 2020nvb (= AT 2020nvb = ATLAS20rvf)
Wednesday, June 17, 2020 - 20:08
Alert Notice 708: Test exposures requested for symbiotic binary candidates
Wednesday, June 17, 2020 - 10:40
Alert Notice 707: Campaign Monitoring of the Helium double peak emission at 6678 Å in gamma Cas - Update to Alert Notice 694
Monday, June 15, 2020 - 09:35
JAAVSO Volume 48 Number 1, 2020 is published
Monday, June 8, 2020 - 15:08
Alert Notice 706: Nova in Sagittarius: N Sgr 2020 No. 2 = ASASSN-20ga [V6568 Sgr]
Friday, May 29, 2020 - 12:00
Alert Notice 705: Rare outburst of the WZ Sge star PQ And (Nova And 1988)
Wednesday, May 6, 2020 - 09:49
Alert Notice 704: Exoplanet candidate observation alert for TYC 2483-160-1
Thursday, April 30, 2020 - 17:24
LPV of the Month - May 2020 - R Cygni
Wednesday, April 29, 2020 - 12:45
Charts and Sequences Updates
Wednesday, April 1, 2020 - 11:51
Alert Notice 703: TCP J21040470+4631129 images, photometry, and spectroscopy urgently requested - REVISED
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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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