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Ask questions on any topic. Nothing is too simple or too complex to ask!
1130 4543 By SGEO 1 day 5 hours ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
231 970 By thomasmuller 5 days 3 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 1 month 3 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
169 966 By petefleurant 2 months 1 week ago
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A forum to discuss variable star data analysis.
112 572 By beka 2 weeks 1 day ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
193 1474 By David Benn 2 months 1 week ago
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For discussion of VSX, the AAVSO Variable Star Index.
171 660 By Sebastian Otero 2 days 15 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.

148 1083 By Bikeman 12 hours 8 minutes ago
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Please use this forum to distribute time sensitive observation alerts.
342 1620 By weo 4 weeks 1 day 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 3646 By gwilliamson 5 days 21 hours ago
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Discussion of and tips for making visual observations.
207 1207 By mdrapp 3 months 1 week ago
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Discussion of CCD, PEP and DSLR photometry.
821 5780 By korobun 1 day 9 hours ago
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307 1866 By John Harrington 10 hours 44 minutes ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
332 1045 By HQA 2 weeks 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 ago
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This forum is for discussions of cataclysmic variable stars.
357 1308 By tlyster 9 hours 51 minutes ago
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16 51 By rachlin 5 months 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.

57 287 By TRE 6 days 23 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 4 weeks 1 day ago
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Discussion of eclipsing binary stars.
75 437 By kevinbalton 1 month ago
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105 490 By SycamoreCanyon… 2 weeks 5 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
172 851 By soi 1 month 4 weeks 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 4 weeks 1 day 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 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
154 680 By weo 4 weeks 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 1 week ago