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Ask questions on any topic. Nothing is too simple or too complex to ask!
1147 4577 By Sebastian Otero 2 days 7 hours ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
241 999 By HQA 7 hours 6 minutes 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.
132 417 By RGN 4 months 3 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
174 982 By Mark Blackford 1 day 16 hours ago
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A forum to discuss variable star data analysis.
117 583 By clkotnik 6 days 11 hours ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
194 1484 By TRE 1 month 3 weeks ago
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For discussion of VSX, the AAVSO Variable Star Index.
177 678 By franco 2 weeks 4 days 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.

160 1140 By Darren 11 hours 7 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
343 1630 By gordonh 1 week 4 days ago
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18 103 By AAVSO_ 2 years 8 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
481 3701 By tlyster 3 days 4 hours ago
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Discussion of and tips for making visual observations.
209 1210 By DFR 1 week 2 days ago
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Discussion of CCD, PEP and DSLR photometry.
845 5916 By arx 2 hours 32 minutes ago
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315 1895 By tlyster 2 weeks 5 days ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
336 1068 By tlyster 3 weeks 3 days ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
697 3547 By Calculad 11 hours 47 minutes ago
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This forum is for discussions of cataclysmic variable stars.
367 1337 By LMN 2 days 11 hours ago
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19 54 By weo 1 month 2 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.

65 298 By Bikeman 2 days 10 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

31 141 By TRE 21 hours 9 minutes ago
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Discussion of eclipsing binary stars.
77 449 By tlyster 1 month 2 weeks ago
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108 498 By geomantNBO 1 hour 53 minutes ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
177 861 By soi 2 weeks 6 days 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.
200 1287 By CrossoverManiac 1 week 1 day ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 1 year ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
157 692 By weo 3 hours 55 minutes 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.
173 603 By BPO 1 week ago