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Ask questions on any topic. Nothing is too simple or too complex to ask!
1002 4076 By bskiff 9 hours 17 minutes ago
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4 70 By hlaird 1 year 2 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 4 days 6 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.
110 385 By Sebastian Otero 5 days 3 hours ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
151 921 By clkotnik 15 hours 38 minutes ago
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A forum to discuss variable star data analysis.
97 501 By DEY_VAR 4 weeks 1 day ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
163 1272 By David Benn 2 weeks 1 day ago
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For discussion of VSX, the AAVSO Variable Star Index.
128 518 By HQA 2 days 22 hours ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 1 year 3 months ago
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Citizen Sky questions, announcements and discussion.
8 14 By test_user2 10 months 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.

102 791 By pablotwa 2 days 8 hours ago
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Please use this forum to distribute time sensitive observation alerts.
315 1533 By SPK 1 week 1 day ago
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18 103 By AAVSO_ 9 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.
439 3154 By annafpala 2 days 2 hours ago
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Discussion of and tips for making visual observations.
199 1187 By AAX 2 months ago
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Discussion of CCD, PEP and DSLR photometry.
725 5306 By daisy 11 hours 23 minutes ago
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250 1659 By hamishbarker 13 hours 2 minutes ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
302 948 By pbealo@comcast.net 1 month 1 week ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
579 3064 By btschumy 6 days 18 hours ago
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This forum is for discussions of cataclysmic variable stars.
314 1087 By SPK 1 week 1 day ago
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11 30 By kevinbalton 7 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.

32 168 By daveh 1 month 2 weeks ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

15 81 By weo 1 month ago
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Discussion of eclipsing binary stars.
53 331 By shoup 6 months 1 week ago
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72 318 By SycamoreCanyon… 1 month 1 week ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
155 792 By Cledison Marco… 1 month 1 week 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.
183 1238 By Andrew Pearce 1 week 5 days ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
56 223 By hambsch 1 month 1 week ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
122 547 By lward 3 weeks 1 day 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.
154 526 By fwalter 1 week 6 days ago