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Ask questions on any topic. Nothing is too simple or too complex to ask!
1038 4162 By rth 1 week ago
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5 73 By SycamoreCanyon… 2 months 2 weeks ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
210 911 By BSJ 1 month 3 weeks 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.
115 390 By Sebastian Otero 1 month ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
160 944 By lxdavi55 3 days 2 hours ago
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A forum to discuss variable star data analysis.
101 527 By kjkoeller 6 days 16 hours ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
170 1322 By Degen1103 6 hours 12 minutes ago
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For discussion of VSX, the AAVSO Variable Star Index.
143 567 By Sebastian Otero 1 hour 43 minutes ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 1 year 8 months ago
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Citizen Sky questions, announcements and discussion.
8 16 By pierrejsavard@… 1 day 5 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.

110 836 By knak 1 week 6 days ago
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Please use this forum to distribute time sensitive observation alerts.
324 1567 By FRF 1 week 5 days ago
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18 103 By AAVSO_ 1 year 3 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
455 3271 By annafpala 5 days 5 hours ago
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Discussion of and tips for making visual observations.
199 1187 By AAX 7 months 1 week ago
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Discussion of CCD, PEP and DSLR photometry.
755 5444 By BoyceAstro 1 week 2 days ago
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270 1710 By arimsiqueira 2 weeks 6 days ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
308 958 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.
605 3180 By Degen1103 20 hours 18 minutes ago
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This forum is for discussions of cataclysmic variable stars.
321 1117 By demula 3 days 11 hours ago
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14 44 By David Benn 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.

41 206 By Bikeman 2 weeks 1 day ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

19 91 By BSJ 1 month 1 week ago
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Discussion of eclipsing binary stars.
61 358 By Degen1103 16 hours 46 minutes ago
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79 342 By wglogowski 5 days 3 hours ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
161 816 By Degen1103 3 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.
186 1244 By DEY_VAR 1 week 1 day ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
56 223 By hambsch 6 months 2 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
142 628 By darius 4 days 4 hours 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.
162 563 By weo 1 week 2 days ago