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Ask questions on any topic. Nothing is too simple or too complex to ask!
1089 4378 By Fiske 42 minutes 51 seconds ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
216 938 By Calculad 1 week 1 day ago
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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.
126 405 By Sebastian Otero 1 week 5 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
170 964 By Aliciasmith 2 weeks ago
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A forum to discuss variable star data analysis.
105 558 By daisy 1 month ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
188 1441 By David Benn 2 weeks 4 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
158 621 By Sebastian Otero 2 days 9 hours ago
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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.

131 996 By Calculad 1 week 3 days ago
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Please use this forum to distribute time sensitive observation alerts.
334 1596 By Mohammad Odeh 1 week 3 days ago
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18 103 By AAVSO_ 1 year 11 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
463 3371 By nrivard 9 hours 35 minutes ago
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Discussion of and tips for making visual observations.
202 1191 By weo 4 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
788 5589 By weo 7 hours 39 minutes ago
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288 1772 By wbailey42 6 days 8 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
326 1018 By Degen1103 1 week ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
628 3265 By Calculad 4 weeks 1 day ago
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This forum is for discussions of cataclysmic variable stars.
340 1175 By garnavich 23 hours 15 minutes ago
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16 48 By weo 3 months 3 weeks ago
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Information on the observation and analysis of stars and other objects that are sources of x-rays and gamma rays.

48 228 By Bikeman 1 week 2 days ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

26 123 By gilchrist.alle… 1 hour 38 minutes ago
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Discussion of eclipsing binary stars.
69 384 By kevinbalton 1 week 6 days ago
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94 445 By NikolaAntonov 4 days 7 hours ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
164 826 By soi 1 month 2 weeks ago
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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.
196 1260 By DEY_VAR 3 weeks 5 days ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 3 months 1 week ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
151 667 By weo 1 week 6 days ago
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Discussion of young stellar objects, pre-main sequence stars and other variable objects in the early stages of stellar evolution.
166 572 By weo 2 months 1 week ago