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Ask questions on any topic. Nothing is too simple or too complex to ask!
1131 4544 By ulissequadri 1 hour 19 minutes ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
232 972 By weo 2 days 11 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.
132 417 By RGN 2 months ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
169 966 By petefleurant 2 months 2 weeks ago
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A forum to discuss variable star data analysis.
112 572 By beka 2 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 2 weeks ago
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For discussion of VSX, the AAVSO Variable Star Index.
171 660 By Sebastian Otero 1 week 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.

150 1085 By Peter Bealo 12 hours 57 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
342 1620 By weo 1 month 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.
480 3650 By mkimura 1 day 2 hours ago
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Discussion of and tips for making visual observations.
207 1207 By mdrapp 3 months 2 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
823 5794 By btschumy 15 hours 26 minutes ago
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307 1866 By John Harrington 5 days 11 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
333 1046 By Peter Bealo 18 hours 36 minutes ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
670 3454 By btschumy 1 week 5 days ago
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This forum is for discussions of cataclysmic variable stars.
357 1309 By Gary Shaw 17 hours 52 minutes ago
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16 51 By rachlin 5 months 4 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.

57 287 By TRE 1 week 5 days 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 ago
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Discussion of eclipsing binary stars.
75 437 By kevinbalton 1 month 1 week ago
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105 490 By SycamoreCanyon… 3 weeks 3 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
172 851 By soi 2 months 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 1284 By weo 1 month ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
58 229 By Aengus O'Fearghail 9 months 4 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
154 680 By weo 1 month 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 2 weeks ago