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Ask questions on any topic. Nothing is too simple or too complex to ask!
1124 4520 By coliac 1 day 23 hours ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
227 963 By PYG 17 hours 40 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 1 week 5 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
171 968 By petefleurant 3 weeks 5 days ago
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A forum to discuss variable star data analysis.
111 568 By chrismlt 1 day 13 hours ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
193 1474 By David Benn 3 weeks 5 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
170 658 By SKA 16 hours 55 minutes ago
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.

143 1057 By spp 3 hours 10 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
341 1619 By Sebastian Otero 1 week 1 day ago
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18 103 By AAVSO_ 2 years 4 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
479 3630 By weo 9 hours 6 minutes ago
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Discussion of and tips for making visual observations.
207 1207 By mdrapp 1 month 4 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
816 5749 By HQA 1 day 11 hours ago
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303 1852 By scott.donnell 5 days 16 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
331 1044 By SGEO 2 months ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
661 3419 By icclouds 2 days 12 hours ago
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This forum is for discussions of cataclysmic variable stars.
354 1288 By cwt 3 days 6 hours ago
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16 51 By rachlin 4 months 1 week 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.

55 275 By tjmaccarone 2 days 15 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

28 129 By SHA 3 weeks 2 days ago
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Discussion of eclipsing binary stars.
74 434 By Ed Wiley_WEY 3 weeks 6 days ago
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104 489 By weo 1 month ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
172 851 By soi 2 weeks 2 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.
199 1277 By mrv 4 days 11 hours ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 8 months 1 week ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
154 679 By weo 2 weeks 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.
168 593 By weo 9 hours 55 minutes ago