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Ask questions on any topic. Nothing is too simple or too complex to ask!
982 3937 By sdafasdf 12 minutes 52 seconds ago
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26 93 By James Richard 11 minutes 12 seconds ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
194 853 By aalkingshk 27 minutes 5 seconds 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.
103 375 By aalkingshk 26 minutes 42 seconds ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
141 873 By aalkingshk 33 minutes 15 seconds ago
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A forum to discuss variable star data analysis.
99 491 By aalkingshk 26 minutes 34 seconds ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
152 1170 By aalkingshk 26 minutes 54 seconds ago
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For discussion of VSX, the AAVSO Variable Star Index.
118 498 By Sebastian Otero 2 days 6 hours ago
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Questions, discussions and announcements related to Eggen Card Project.
10 25 By Free Fire 19 minutes 41 seconds ago
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Citizen Sky questions, announcements and discussion.
8 14 By Free Fire 30 minutes 53 seconds 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.

68 545 By ufcstreams 17 minutes 41 seconds ago
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Please use this forum to distribute time sensitive observation alerts.
305 1500 By mdarifulislamarif 37 minutes 41 seconds ago
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19 104 By mdarifulislamarif 38 minutes 21 seconds ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
416 2949 By mdarifulislamarif 39 minutes 16 seconds ago
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Discussion of and tips for making visual observations.
198 1183 By aalkingshk 26 minutes 10 seconds ago
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Discussion of CCD, PEP and DSLR photometry.
663 4962 By Free Fire 25 minutes 2 seconds ago
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227 1565 By Robin Leadbeater 4 days 19 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
289 897 By mdarifulislamarif 39 minutes 4 seconds ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
541 2871 By TRE 2 days 17 hours ago
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This forum is for discussions of cataclysmic variable stars.
304 1056 By weo 1 week 4 days ago
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10 25 By alschmitt 6 months 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.

17 113 By Bikeman 1 month 1 week ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

9 34 By Bernhard 1 month 3 weeks ago
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Discussion of eclipsing binary stars.
47 293 By bpablo 4 months ago
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50 227 By rzellem 3 days ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
147 780 By croberrw 1 month 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.
179 1217 By kojimukai 2 weeks 1 day ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 7 months ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
120 535 By lward 1 week 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.
135 436 By pbealo@comcast.net 3 weeks 3 days ago