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Ask questions on any topic. Nothing is too simple or too complex to ask!
1104 4448 By tlyster 4 days ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
218 940 By zinnanti 6 days 16 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.
129 413 By apatino 3 days 8 hours ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
170 965 By arx 1 week 1 day ago
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A forum to discuss variable star data analysis.
108 561 By arimsiqueira 1 week 5 days ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
190 1454 By David Hollinberger 6 days 2 hours ago
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For discussion of VSX, the AAVSO Variable Star Index.
162 639 By SGEO 2 weeks 5 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.

137 1027 By Bikeman 3 days 3 hours ago
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Please use this forum to distribute time sensitive observation alerts.
336 1598 By raymundang 3 weeks 1 day ago
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18 103 By AAVSO_ 2 years 1 month ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
470 3487 By arimsiqueira 2 days 23 hours ago
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Discussion of and tips for making visual observations.
206 1204 By TRE 1 month ago
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Discussion of CCD, PEP and DSLR photometry.
803 5700 By arx 14 hours 30 minutes ago
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294 1814 By revans 2 days 5 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
328 1028 By FF2Rydia 3 weeks 3 days ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
645 3355 By SGEO 3 days 18 hours ago
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This forum is for discussions of cataclysmic variable stars.
347 1241 By cwt 4 days ago
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16 51 By rachlin 1 month 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.

51 238 By Bikeman 3 days 20 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

26 123 By gilchrist.alle… 2 months ago
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Discussion of eclipsing binary stars.
72 430 By Tony Vale 36 minutes 26 seconds ago
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96 448 By Contact@70 2 weeks 6 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
169 838 By raymundang 3 weeks 1 day 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.
197 1269 By DEY_VAR 1 week 2 days ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 5 months 1 week ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
153 677 By weo 2 weeks 4 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.
167 575 By weo 1 week 5 days ago