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Ask questions on any topic. Nothing is too simple or too complex to ask!
912 3834 By BSJ 6 hours 25 minutes ago
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3 68 By arx 1 month 3 weeks ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
185 824 By BSJ 6 hours 47 minutes 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.
98 361 By baotp123 2 weeks 1 day ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
133 859 By kevinmalone01 1 day 11 hours ago
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A forum to discuss variable star data analysis.
87 472 By GabrielGL 3 months 2 weeks ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
139 1122 By David Benn 2 weeks 6 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
110 453 By Sebastian Otero 2 months 3 weeks ago
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Questions, discussions and announcements related to Eggen Card Project.
7 21 By tiro0181 1 month 3 weeks ago
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Citizen Sky questions, announcements and discussion.
7 13 By onj 1 week 3 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.

47 449 By ka5sma 4 weeks ago
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Please use this forum to distribute time sensitive observation alerts.
294 1462 By weo 1 week 1 day ago
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16 98 By rgpiccioni 3 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
401 2885 By sgoldman 3 days 1 hour ago
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Discussion of and tips for making visual observations.
196 1180 By BTB 2 weeks 1 day ago
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Discussion of CCD, PEP and DSLR photometry.
646 4861 By woodblock 1 day 11 hours ago
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213 1517 By phdanthine 6 hours 50 minutes ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
283 882 By MZK 6 days 3 hours ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
516 2754 By MZK 6 hours 45 minutes ago
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This forum is for discussions of cataclysmic variable stars.
293 1024 By BTB 2 weeks 1 day ago
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10 25 By alschmitt 1 month 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.

10 84 By Bikeman 1 week 1 day ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

8 31 By MatthiasK 2 weeks 1 day ago
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Discussion of eclipsing binary stars.
46 288 By Ed Wiley_WEY 1 week 6 days ago
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45 209 By BTB 2 weeks 1 day ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
144 762 By weo 3 days 3 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.
171 1178 By weo 1 week 1 day ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 1 month 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
116 512 By lward 5 days 19 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.
131 420 By pox 4 hours 30 minutes ago