Skip to main content


  Forum Topics Posts Last post
No new
Ask questions on any topic. Nothing is too simple or too complex to ask!
3826 President's...
by mgw
09/17/2020 - 14:40
No new
61 Planning AAVSO's...
by pox
09/13/2020 - 17:14
No new
Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
732 Obscode as User Name
by Firochromis
12 hours 52 min ago
No new
Un foro para la comunidad de habla hispana dedicado a intercambiar comentarios, observaciones y todo tipo de informacion relacionada con las estrellas variables y su estudio.
367 Cách Cá Cược...
by thanhthuy02
09/14/2020 - 22:32
No new
Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
855 Transform...
by PCC
09/06/2020 - 09:10
No new
A forum to discuss variable star data analysis.
503 Why are...
by FJQ
09/12/2020 - 08:02
No new
Discussion of the AAVSO's visualization and analysis tool, VStar
1131 VStar release 2.21.2
by mpyat2
09/10/2020 - 14:31
No new
For discussion of VSX, the AAVSO Variable Star Index.
420 Order by...
by aavsovsx
08/26/2020 - 09:57
No new
Questions, discussions and announcements related to Eggen Card Project.
20 Eggen...
by jcrast
01/05/2019 - 12:38
No new
Citizen Sky questions, announcements and discussion.
13 n/a
The AAVSO Governance forum is visible only to AAVSO members. CHOICE forums are visible only to class participants.
  Forum Topics Posts Last post
  Forum Topics Posts Last post
No new
For discussions on all aspects of equipment, from building new devices from scratch, to what ready made products are the best for your current setup. Attached the "Instrumentation and Equipment" observing section.
312 Photometric...
by spp
2 hours 18 min ago
No new
Please use this forum to distribute time sensitive observation alerts.
1329 Aquila X-1 (V1333...
by gsivakoff
13 hours 40 min ago
No new
110 Raw files for...
by B.P.Vietje
05/10/2020 - 21:10
No new
Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
2725 BL Lac bright ...
by Bikeman
10 hours 49 min ago
No new
Discussion of and tips for making visual observations.
1154 Purkinje and v....
by tiburd
09/07/2020 - 00:13
No new
Discussion of CCD, PEP and DSLR photometry.
4597 Bright Comparison...
by Stan Walker
09/14/2020 - 20:27
No new
1390 P Cygni
by ErnstPollmann
09/16/2020 - 09:00
No new
This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
824 AAVSOnet Status,...
by HQA
09/18/2020 - 15:28
No new
This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
2471 Is VPHOT down?
by TRE
21 hours 23 min ago
  Forum Topics Posts Last post
No new
This forum is for discussions of cataclysmic variable stars.
951 SS Cyg campaign -...
by MatthiasK
15 hours 34 min ago
No new
9 TESS Full Frame...
by clkotnik
07/11/2020 - 17:54
No new
Information on the observation and analysis of stars and other objects that are sources of x-rays and gamma rays.
55 Observations of...
by Bikeman
09/09/2020 - 19:11
No new
Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.
15 Welcome to the...
by arx
07/29/2020 - 20:18
No new
Discussion of eclipsing binary stars.
242 Phoebe 2.2 and...
by MMU
1 day 16 hours ago
No new
179 incomplete light...
by dennis-conti
08/26/2020 - 14:38
No new
Discussion of long period variable stars: mira's, semiregulars, etc.
756 LPV Bulletin 2020
by DNO
08/22/2020 - 15:24
No new
A forum created to support Jeno Sokoloski's nova project, to increase our level of support for all areas of nova observation, and for general discussion of novae.
1196 PGIR20ekz: missed...
by SPK
09/16/2020 - 03:06
No new
Discussion of RCBs and related classes of stars that show irregular fading episodes.
218 FH Sct: deep fading
by SPK
02/28/2020 - 16:02
No new
Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
474 magnification
09/16/2020 - 08:27
No new
Discussion of young stellar objects, pre-main sequence stars and other variable objects in the early stages of stellar evolution.
402 ASASSN-V J181654...
by dmvandam
09/18/2020 - 11:57
New posts
No new posts
AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484