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Ask questions on any topic. Nothing is too simple or too complex to ask!
1013 4095 By kathyspirer 3 days 12 hours ago
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4 70 By hlaird 1 year 3 months ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
208 908 By divye.ruhela 1 month 3 weeks 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.
111 386 By Sebastian Otero 3 weeks 3 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
153 924 By AsmCoder8088 4 hours 36 minutes ago
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A forum to discuss variable star data analysis.
98 503 By BSJ 17 hours 8 minutes ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
165 1278 By David Benn 1 week 4 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
131 532 By Degen1103 1 week 2 days ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 1 year 4 months ago
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Citizen Sky questions, announcements and discussion.
8 14 By test_user2 11 months 3 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.

106 820 By Mark Blackford 5 days ago
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Please use this forum to distribute time sensitive observation alerts.
317 1545 By weo 3 days 9 hours ago
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18 103 By AAVSO_ 11 months 1 week ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
444 3191 By weo 5 hours 8 minutes ago
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Discussion of and tips for making visual observations.
199 1187 By AAX 3 months 2 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
734 5352 By dennis-conti 11 hours 40 minutes ago
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257 1679 By LMN 4 days 13 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
304 950 By pbealo@comcast.net 1 week 1 day ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
584 3090 By dennis-conti 11 hours 37 minutes ago
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This forum is for discussions of cataclysmic variable stars.
315 1089 By dennis-conti 11 hours 34 minutes ago
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11 30 By kevinbalton 9 months 2 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.

36 179 By PYG 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.

16 82 By dennis-conti 11 hours 28 minutes ago
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Discussion of eclipsing binary stars.
55 342 By dennis-conti 11 hours 32 minutes ago
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73 320 By dennis-conti 11 hours 52 minutes ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
157 796 By weo 1 week 5 days 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.
184 1239 By weo 3 days 9 hours ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
56 223 By hambsch 2 months 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
124 555 By lward 2 weeks 3 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.
155 527 By pbealo@comcast.net 2 days 4 hours ago