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Ask questions on any topic. Nothing is too simple or too complex to ask!
1054 4236 By sink45ny 1 day 1 hour ago
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5 73 By SycamoreCanyon… 4 months 2 weeks ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
210 911 By BSJ 3 months 4 weeks 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.
118 393 By Sebastian Otero 1 week 5 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
165 950 By tmad 10 hours 42 minutes ago
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A forum to discuss variable star data analysis.
103 541 By David Benn 2 weeks 6 days ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
179 1399 By Degen1103 6 hours 18 minutes ago
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For discussion of VSX, the AAVSO Variable Star Index.
149 592 By Sebastian Otero 4 hours 42 minutes ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 1 year 10 months ago
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Citizen Sky questions, announcements and discussion.
8 16 By pierrejsavard@… 2 months 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.

118 904 By sink45ny 5 hours 48 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
325 1569 By weo 1 month 1 week ago
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18 103 By AAVSO_ 1 year 5 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
457 3313 By annafpala 1 day 10 hours ago
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Discussion of and tips for making visual observations.
199 1187 By AAX 9 months 2 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
762 5479 By bskiff 2 days 18 hours ago
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273 1722 By weo 2 weeks 6 days ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
311 966 By MSD1948 4 days 23 hours ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
613 3205 By MZK 1 week 2 days ago
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This forum is for discussions of cataclysmic variable stars.
324 1130 By pgodon 4 days 20 hours ago
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15 47 By Sebastian Otero 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.

43 209 By Bikeman 3 days 5 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

21 102 By YPFA 3 weeks 3 days ago
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Discussion of eclipsing binary stars.
62 369 By Robert Jenkins 1 week 5 days ago
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87 402 By SycamoreCanyon… 8 hours 50 minutes ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
161 816 By Degen1103 2 months 4 weeks 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.
188 1248 By weo 1 month 1 week ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
56 223 By hambsch 8 months 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
148 649 By lward 1 week 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.
162 566 By weo 2 weeks 1 day ago