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Ask questions on any topic. Nothing is too simple or too complex to ask!
900 3792 By bjs 1 day 18 hours ago
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3 67 By tcalderw 11 hours 47 minutes ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
178 811 By Kaban 1 week 6 days 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.
97 360 By Sebastian Otero 2 weeks 2 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
130 851 By Jordimarco 3 weeks 3 days ago
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A forum to discuss variable star data analysis.
87 472 By GabrielGL 1 month 2 weeks ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
137 1116 By soi 4 weeks ago
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For discussion of VSX, the AAVSO Variable Star Index.
110 453 By Sebastian Otero 1 month ago
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Questions, discussions and announcements related to Eggen Card Project.
7 20 By jcrast 2 years 1 month ago
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Citizen Sky questions, announcements and discussion.
5 10 By uea25219 5 hours 15 minutes 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.

45 433 By pbealo@comcast.net 1 day 14 hours ago
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Please use this forum to distribute time sensitive observation alerts.
289 1434 By CTX 1 day 11 hours ago
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16 98 By rgpiccioni 1 month 1 week ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
398 2850 By WBY 9 hours 21 minutes ago
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Discussion of and tips for making visual observations.
194 1174 By pox 1 week ago
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Discussion of CCD, PEP and DSLR photometry.
616 4709 By darrell.lee2010 1 day 10 hours ago
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209 1479 By bpablo 2 days 14 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
278 871 By HQA 1 week ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
502 2677 By mark500 19 hours 35 minutes ago
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This forum is for discussions of cataclysmic variable stars.
292 1022 By MUY 1 week ago
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7 19 By clkotnik 2 months 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.

7 72 By Bikeman 1 day 19 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

6 28 By clkotnik 2 weeks 4 days ago
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Discussion of eclipsing binary stars.
42 274 By HOA 2 days 2 hours ago
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44 207 By WBY 3 weeks 5 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
142 758 By RGN 2 weeks 5 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.
166 1164 By JohnMarsh 2 months 1 week ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 3 days 11 hours ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
115 507 By maxsurlaroute 1 day 7 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.
130 411 By weo 1 day 11 hours ago