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Ask questions on any topic. Nothing is too simple or too complex to ask!
1141 4559 By weo 19 hours 43 minutes ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
237 983 By SGEO 1 week 2 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.
132 417 By RGN 3 months 3 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
172 977 By chrismlt 1 month ago
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A forum to discuss variable star data analysis.
114 575 By alschmitt 2 days 3 hours ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
194 1484 By TRE 3 weeks 1 day ago
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For discussion of VSX, the AAVSO Variable Star Index.
171 661 By franco 1 month 3 weeks 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.

156 1121 By hambsch 18 hours 56 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
342 1623 By weo 1 month 1 week ago
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18 103 By AAVSO_ 2 years 7 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
481 3697 By bpablo 2 days 18 hours ago
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Discussion of and tips for making visual observations.
209 1209 By weo 3 weeks 3 days ago
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Discussion of CCD, PEP and DSLR photometry.
838 5884 By arx 14 hours 17 minutes ago
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314 1894 By bkloppenborg 1 day 12 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
333 1054 By spp 1 week 6 days ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
690 3515 By jmsikora 21 hours 36 minutes ago
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This forum is for discussions of cataclysmic variable stars.
363 1322 By pox 4 days 22 hours ago
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19 54 By weo 2 weeks 4 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.

61 291 By Bikeman 1 day 17 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

30 135 By SHA 4 days 21 hours ago
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Discussion of eclipsing binary stars.
77 449 By tlyster 2 weeks 4 days ago
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106 491 By tlyster 1 week 3 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
176 855 By soi 1 day 14 hours 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.
200 1286 By nikola.antonov 1 month 3 weeks ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 11 months 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
157 690 By 1970maurizio 1 week 3 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.
171 600 By pox 4 days 22 hours ago