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Ask questions on any topic. Nothing is too simple or too complex to ask!
986 4018 By hgp 1 hour 59 minutes ago
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4 70 By hlaird 11 months 2 weeks ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
204 898 By lawlopez 1 month 1 week 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.
107 380 By Sebastian Otero 1 week 5 days ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
149 900 By David Benn 1 week 4 days ago
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A forum to discuss variable star data analysis.
94 494 By Bernhard 1 month 3 weeks ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
160 1234 By David Benn 1 week 4 days ago
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For discussion of VSX, the AAVSO Variable Star Index.
124 509 By lward 2 weeks 2 days ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 1 year ago
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Citizen Sky questions, announcements and discussion.
8 14 By test_user2 7 months 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.

93 743 By HQA 3 days ago
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Please use this forum to distribute time sensitive observation alerts.
308 1506 By PKT 1 month 3 weeks ago
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18 103 By AAVSO_ 7 months ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
431 3124 By annafpala 1 week 6 days ago
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Discussion of and tips for making visual observations.
198 1186 By ahtg 2 months 2 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
706 5170 By HQA 1 hour 59 minutes ago
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243 1629 By assodicuori 6 days 20 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
301 946 By HQA 3 weeks ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
568 3016 By MZK 14 hours 11 minutes ago
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This forum is for discussions of cataclysmic variable stars.
310 1076 By ignpg 2 weeks 2 days ago
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11 30 By kevinbalton 5 months 1 week 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.

30 163 By Bikeman 1 week 1 day ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

10 42 By sah 1 month 3 weeks ago
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Discussion of eclipsing binary stars.
53 331 By shoup 3 months 3 weeks ago
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69 312 By Gary Shaw 1 week 6 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
153 789 By Sebastian Otero 3 weeks 1 day 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.
180 1232 By kojimukai 3 months 1 week ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
55 220 By Cledison Marco… 1 day 11 hours ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
122 545 By BSJ 5 days 19 hours 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.
152 503 By hambsch 1 day 19 hours ago