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Ask questions on any topic. Nothing is too simple or too complex to ask!
3862 Strange object ...
by Sebastian Otero
1 day 19 hours ago
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65 Planning AAVSO's...
by mll
09/27/2020 - 22:16
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
733 Obscode as User Name
by BSJ
09/23/2020 - 15:29
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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
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
869 Transform Apply...
by HBB
09/28/2020 - 05:06
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A forum to discuss variable star data analysis.
511 DSLR Photometry
by Bernhard
10/17/2020 - 10:51
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Discussion of the AAVSO's visualization and analysis tool, VStar
1141 Bug reports
by sgor
10/14/2020 - 12:16
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For discussion of VSX, the AAVSO Variable Star Index.
424 New data-mining...
by Sebastian Otero
10/14/2020 - 20:27
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Questions, discussions and announcements related to Eggen Card Project.
20 Eggen...
by jcrast
01/05/2019 - 12:38
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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.
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  Forum Topics Posts Last post
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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.
356 Photometric...
19 hours 51 min ago
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Please use this forum to distribute time sensitive observation alerts.
1360 Aquila X-1 (V1333...
by hambsch
10/14/2020 - 12:27
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110 Raw files for...
by B.P.Vietje
05/10/2020 - 21:10
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
2757 AR Sco observing...
by JohnGovea
2 hours 37 min ago
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Discussion of and tips for making visual observations.
1159 Where is R Scuti...
by williampme
16 hours 9 min ago
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Discussion of CCD, PEP and DSLR photometry.
4602 MUNIWIN for DSLR...
19 hours 58 min ago
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1393 Spectroscopy...
by ErnstPollmann
3 hours 57 min ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
831 AAVSOnet Status,...
by HQA
10/15/2020 - 08:10
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
2532 Telescope filter...
by arx
10/18/2020 - 18:24
  Forum Topics Posts Last post
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This forum is for discussions of cataclysmic variable stars.
980 KK Cnc currently...
by RHM
10/17/2020 - 12:54
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10 New data-mining...
by Sebastian Otero
10/15/2020 - 10:03
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Information on the observation and analysis of stars and other objects that are sources of x-rays and gamma rays.
59 QSO B0506+056 is...
by daveh
1 day 22 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.
18 Cepeid B star...
by Sebastian Otero
10/04/2020 - 00:41
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Discussion of eclipsing binary stars.
269 Updated...
by VMT
10/18/2020 - 19:36
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179 incomplete light...
by dennis-conti
08/26/2020 - 14:38
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Discussion of long period variable stars: mira's, semiregulars, etc.
761 LPV Bulletin 2020
by Eric Dose
10/15/2020 - 20:28
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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.
1207 PNV J17545999...
by weo
10/08/2020 - 09:42
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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
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
479 AR12776
10/15/2020 - 13:40
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Discussion of young stellar objects, pre-main sequence stars and other variable objects in the early stages of stellar evolution.
404 AAVSO Alert...
by weo
09/30/2020 - 12:45
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