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Ask questions on any topic. Nothing is too simple or too complex to ask!
1144 4570 By Usman Isa 2 days 6 hours ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
238 984 By Degen1103 3 days 12 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.
132 417 By RGN 4 months 1 week ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
172 977 By chrismlt 1 month 2 weeks ago
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A forum to discuss variable star data analysis.
116 582 By TRE 2 days 1 hour ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
194 1484 By TRE 4 weeks 2 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
176 672 By Sebastian Otero 23 hours 47 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.

156 1122 By arimsiqueira 1 week 1 day ago
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Please use this forum to distribute time sensitive observation alerts.
343 1628 By Sebastian Otero 1 day 1 hour 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 1 week 4 days ago
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Discussion of and tips for making visual observations.
209 1209 By weo 1 month ago
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Discussion of CCD, PEP and DSLR photometry.
839 5891 By weo 6 hours 3 minutes ago
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314 1894 By bkloppenborg 1 week 2 days ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
336 1068 By tlyster 3 days 7 hours ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
691 3517 By Degen1103 3 days 13 hours ago
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This forum is for discussions of cataclysmic variable stars.
364 1323 By tlyster 4 days 4 hours ago
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19 54 By weo 3 weeks 6 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 week 3 days 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 1 week 6 days ago
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Discussion of eclipsing binary stars.
77 449 By tlyster 3 weeks 6 days ago
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107 495 By danigarsiagarsia476 5 days 12 hours ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
177 860 By bskiff 1 hour 59 minutes 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 2 months ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 1 year ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
157 691 By weo 4 days 3 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.
171 600 By pox 1 week 6 days ago