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Ask questions on any topic. Nothing is too simple or too complex to ask!
1131 4545 By bkloppenborg 6 days 15 hours ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
232 972 By weo 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 2 months 1 week ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
170 967 By mikeprimm 7 hours 32 minutes ago
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A forum to discuss variable star data analysis.
112 572 By beka 3 weeks 6 days ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
193 1474 By David Benn 2 months 3 weeks ago
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For discussion of VSX, the AAVSO Variable Star Index.
171 661 By franco 4 days 22 hours 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.

151 1095 By Gianlucanigro 2 hours 20 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
342 1620 By weo 1 month 1 week ago
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18 103 By AAVSO_ 2 years 5 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
481 3671 By DEY_VAR 12 hours 20 minutes ago
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Discussion of and tips for making visual observations.
207 1207 By mdrapp 3 months 3 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
825 5798 By SGEO 4 days 13 hours ago
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308 1867 By scott.donnell 5 days 9 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
333 1049 By HQA 5 days 18 hours ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
675 3469 By Gianlucanigro 2 hours 15 minutes ago
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This forum is for discussions of cataclysmic variable stars.
358 1310 By garyhawkins 4 days 18 hours ago
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16 51 By rachlin 6 months 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.

58 288 By Bikeman 2 days 3 hours ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

29 132 By SHA 1 month 1 week ago
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Discussion of eclipsing binary stars.
76 447 By tlyster 20 hours 24 minutes ago
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105 490 By SycamoreCanyon… 1 month ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
172 851 By soi 2 months 1 week 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 5 days 2 hours ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 10 months ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
155 685 By Arnav Ranjekar 2 days 17 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.
168 596 By hambsch 1 month 3 weeks ago