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Ask questions on any topic. Nothing is too simple or too complex to ask!
915 3839 By njsg 3 days 9 hours ago
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3 68 By arx 2 months 1 week ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
185 826 By weo 5 days 10 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.
97 361 By olichris 6 days 21 hours ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
134 860 By Deconinck Michel 6 days 22 hours ago
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A forum to discuss variable star data analysis.
88 474 By michaelc 1 day 22 hours ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
140 1123 By DEnc 2 weeks 3 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
111 460 By Sebastian Otero 1 week ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 10 hours 58 minutes ago
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Citizen Sky questions, announcements and discussion.
7 13 By onj 4 weeks 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.

49 460 By GeoLek 3 days 9 hours ago
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Please use this forum to distribute time sensitive observation alerts.
296 1473 By Filipp Romanov 19 minutes 49 seconds ago
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16 98 By rgpiccioni 3 months 3 weeks ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
402 2890 By dmvandam 3 minutes 19 seconds ago
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Discussion of and tips for making visual observations.
196 1180 By BTB 1 month ago
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Discussion of CCD, PEP and DSLR photometry.
649 4884 By jzamorano 21 hours 39 minutes ago
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215 1522 By weo 6 days 6 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
283 884 By MZK 1 week 3 days ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
517 2761 By pbealo@comcast.net 1 week 1 day ago
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This forum is for discussions of cataclysmic variable stars.
295 1027 By pava0555 1 day 17 hours ago
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10 25 By alschmitt 1 month 3 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.

11 89 By Bikeman 1 week 2 days 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 month ago
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Discussion of eclipsing binary stars.
47 289 By Ed Wiley_WEY 1 week 2 days ago
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45 209 By BTB 1 month ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
145 767 By weo 6 days 6 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 1179 By weo 7 hours 33 minutes ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 2 months 2 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
117 523 By GeoLek 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.
132 427 By pox 4 days 16 hours ago