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Ask questions on any topic. Nothing is too simple or too complex to ask!
968 3953 By lward 1 day 22 hours ago
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4 70 By hlaird 7 months 1 week ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
197 876 By BSJ 2 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.
102 375 By Sebastian Otero 2 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
146 889 By Tonisee 1 week 6 days ago
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A forum to discuss variable star data analysis.
92 485 By sabichette 2 months 2 weeks ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
151 1181 By David Benn 1 month ago
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For discussion of VSX, the AAVSO Variable Star Index.
120 502 By Sebastian Otero 2 months 3 weeks ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 8 months 1 week ago
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Citizen Sky questions, announcements and discussion.
8 14 By test_user2 3 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.

72 636 By jmsikora 2 days 23 hours ago
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Please use this forum to distribute time sensitive observation alerts.
307 1502 By dks 3 months ago
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18 103 By AAVSO_ 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.
425 3057 By annafpala 3 days 8 hours ago
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Discussion of and tips for making visual observations.
197 1182 By ajc 2 months 1 week ago
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Discussion of CCD, PEP and DSLR photometry.
683 5054 By FRF 6 hours 22 minutes ago
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234 1579 By sdprofx 3 weeks ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
290 909 By hambsch 1 month ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
562 2975 By PieterVuylsteke 2 weeks 6 days ago
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This forum is for discussions of cataclysmic variable stars.
307 1069 By ignpg 6 days 10 hours ago
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11 30 By kevinbalton 1 month 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.

20 116 By Bikeman 6 days 23 hours 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 5 months 3 weeks ago
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Discussion of eclipsing binary stars.
52 316 By eurimar 1 day 20 hours ago
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65 284 By wglogowski 3 days 4 hours ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
150 785 By croberrw 1 week 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 1228 By William Diffin 1 month ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 10 months 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
121 541 By lward 2 days 2 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.
142 459 By fwalter 3 days 5 hours ago