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Ask questions on any topic. Nothing is too simple or too complex to ask!
1044 4176 By SycamoreCanyon… 1 day 15 hours ago
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5 73 By SycamoreCanyon… 2 months 4 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 2 months 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 1 week ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
160 944 By lxdavi55 1 week 6 days ago
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A forum to discuss variable star data analysis.
101 531 By arx 5 days 15 hours ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
171 1323 By schaefer 3 days 10 hours ago
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For discussion of VSX, the AAVSO Variable Star Index.
144 568 By Sebastian Otero 4 days 5 hours 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 week 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.

111 843 By spp 2 days 12 hours ago
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Please use this forum to distribute time sensitive observation alerts.
324 1567 By FRF 3 weeks 1 day 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 3274 By weo 12 hours 54 minutes ago
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Discussion of and tips for making visual observations.
199 1187 By AAX 7 months 3 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
756 5448 By Eric Dose 17 hours 23 minutes ago
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270 1710 By arimsiqueira 4 weeks 2 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 2 weeks 3 days ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
606 3184 By MZK 1 day 9 hours ago
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This forum is for discussions of cataclysmic variable stars.
321 1118 By weo 3 days 14 hours ago
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14 44 By David Benn 3 weeks 3 days 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 3 weeks 4 days ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

20 95 By btschumy 7 hours 44 minutes ago
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Discussion of eclipsing binary stars.
61 360 By Degen1103 1 week 3 days ago
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79 343 By chasmiller46 1 week ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
161 816 By Degen1103 1 month 1 week 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 2 weeks 4 days ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
56 223 By hambsch 6 months 4 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
145 639 By LKR 3 days 13 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.
162 564 By weo 12 hours 22 minutes ago