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Ask questions on any topic. Nothing is too simple or too complex to ask!
952 3913 By CTX 1 day 4 hours ago
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4 70 By hlaird 4 months 2 weeks ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
188 847 By BSJ 3 months 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.
99 371 By Mesarthim 2 months 4 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
138 870 By bert_test 1 week 4 days ago
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A forum to discuss variable star data analysis.
91 484 By CTX 1 week 2 days ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
150 1174 By David Benn 1 week ago
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For discussion of VSX, the AAVSO Variable Star Index.
119 501 By hgp 1 week ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 5 months 1 week ago
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Citizen Sky questions, announcements and discussion.
8 14 By test_user2 1 week 4 days 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.

66 559 By Richard Berry 3 days 3 hours ago
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Please use this forum to distribute time sensitive observation alerts.
305 1500 By dks 4 days 23 hours ago
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17 102 By ASUTOSH 2 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.
416 2954 By Sebastian Otero 1 day 1 hour ago
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Discussion of and tips for making visual observations.
196 1181 By tomstock 4 months ago
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Discussion of CCD, PEP and DSLR photometry.
662 4963 By pbealo@comcast.net 1 week ago
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230 1573 By ErnstPollmann 2 days 6 hours ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
287 900 By pbealo@comcast.net 3 days 23 hours ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
545 2886 By spp 1 hour 4 minutes ago
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This forum is for discussions of cataclysmic variable stars.
304 1057 By avacovington 3 weeks 3 days ago
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10 27 By YPFA 2 weeks 5 days 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 2 months 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 2 months 3 weeks ago
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Discussion of eclipsing binary stars.
47 293 By bpablo 5 months ago
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50 227 By rzellem 1 month ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
147 780 By croberrw 2 months 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 1219 By FRF 1 week ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 8 months ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
120 536 By lward 2 days 21 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.
137 441 By weo 1 day 5 hours ago