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Ask questions on any topic. Nothing is too simple or too complex to ask!
911 3832 By SGQ 4 days 23 hours 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 MSD1948 3 days 15 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.
98 361 By baotp123 2 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
133 859 By kevinmalone01 6 hours 4 minutes 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 5 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 1 day 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 3 weeks 6 days ago
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Please use this forum to distribute time sensitive observation alerts.
294 1462 By weo 6 days 22 hours 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 1 day 19 hours ago
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Discussion of and tips for making visual observations.
196 1180 By BTB 1 week 6 days ago
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Discussion of CCD, PEP and DSLR photometry.
646 4861 By woodblock 5 hours 40 minutes ago
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213 1516 By Robin Leadbeater 1 day 5 hours 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 4 days 22 hours ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
516 2748 By MZK 16 hours 35 minutes ago
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This forum is for discussions of cataclysmic variable stars.
293 1024 By BTB 1 week 6 days 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 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 1 week 6 days ago
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Discussion of eclipsing binary stars.
46 288 By Ed Wiley_WEY 1 week 5 days ago
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45 209 By BTB 1 week 6 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
144 762 By weo 1 day 22 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 6 days 22 hours 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 4 days 14 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.
131 419 By fwalter 5 days 16 hours ago