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Ask questions on any topic. Nothing is too simple or too complex to ask!
902 3802 By mdrapp 1 day 11 hours ago
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3 68 By arx 6 days 22 hours ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
179 813 By Eric Dose 2 days 6 hours 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 3 weeks 3 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
130 851 By Jordimarco 1 month ago
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A forum to discuss variable star data analysis.
87 472 By GabrielGL 1 month 4 weeks ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
137 1116 By soi 1 month 1 week ago
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For discussion of VSX, the AAVSO Variable Star Index.
110 453 By Sebastian Otero 1 month 1 week ago
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Questions, discussions and announcements related to Eggen Card Project.
7 21 By tiro0181 6 days 20 hours ago
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Citizen Sky questions, announcements and discussion.
5 10 By uea25219 1 week 1 day 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.

45 436 By DavidJ 4 days 5 hours ago
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Please use this forum to distribute time sensitive observation alerts.
289 1434 By CTX 1 week 2 days ago
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16 98 By rgpiccioni 1 month 2 weeks ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
399 2860 By eclipse-chaser 12 hours 23 minutes ago
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Discussion of and tips for making visual observations.
194 1175 By mdrapp 1 day 11 hours ago
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Discussion of CCD, PEP and DSLR photometry.
617 4715 By arx 8 hours 28 minutes ago
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210 1482 By ebellm 1 day 7 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 2 weeks 1 day ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
504 2685 By CrossoverManiac 1 day 13 hours ago
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This forum is for discussions of cataclysmic variable stars.
292 1023 By mkimura1379 2 days 3 hours ago
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7 20 By zakery.koban@g… 6 days 14 hours 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 73 By Bikeman 5 days 16 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 3 weeks 5 days ago
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Discussion of eclipsing binary stars.
43 275 By weo 3 days 14 hours ago
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44 207 By WBY 1 month ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
142 758 By RGN 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.
166 1164 By JohnMarsh 2 months 2 weeks ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 1 week 4 days ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
115 507 By maxsurlaroute 1 week 2 days 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 week 2 days ago