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Ask questions on any topic. Nothing is too simple or too complex to ask!
1028 4124 By Sebastian Otero 3 days ago
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5 73 By SycamoreCanyon… 3 weeks 2 days ago
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Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
210 911 By BSJ 1 day 23 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.
113 388 By Sebastian Otero 3 weeks ago
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Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
159 942 By daisy 1 month ago
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A forum to discuss variable star data analysis.
100 512 By SycamoreCanyon… 3 weeks 2 days ago
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Discussion of the AAVSO's visualization and analysis tool, VStar
167 1293 By David Benn 2 days 2 hours ago
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For discussion of VSX, the AAVSO Variable Star Index.
139 556 By SachaFosc-OBP 1 day 2 hours ago
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Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 1 year 6 months ago
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Citizen Sky questions, announcements and discussion.
8 15 By pierrejsavard@… 1 month 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.

108 831 By Degen1103 2 weeks 3 days ago
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Please use this forum to distribute time sensitive observation alerts.
318 1546 By bskiff 3 weeks 6 days ago
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18 103 By AAVSO_ 1 year 1 month ago
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Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
453 3253 By weo 23 hours 8 minutes ago
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Discussion of and tips for making visual observations.
199 1187 By AAX 5 months 2 weeks ago
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Discussion of CCD, PEP and DSLR photometry.
746 5392 By Degen1103 6 days 7 hours ago
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268 1705 By ErnstPollmann 6 hours 54 minutes ago
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This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
306 953 By HQA 4 weeks 1 day ago
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This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
593 3142 By spp 1 week 1 day ago
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This forum is for discussions of cataclysmic variable stars.
317 1099 By weo 2 weeks 2 days ago
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13 37 By GabrielGL 3 days 20 hours 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.

39 201 By Mike_F 18 hours 28 minutes ago
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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

18 90 By SHA 2 weeks 1 day ago
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Discussion of eclipsing binary stars.
57 347 By kevinbalton 2 weeks 5 days ago
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73 324 By weo 1 month 1 week ago
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Discussion of long period variable stars: mira's, semiregulars, etc.
160 810 By VY Canis Majoris 4 hours 5 minutes 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.
184 1239 By weo 2 months ago
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Discussion of RCBs and related classes of stars that show irregular fading episodes.
56 223 By hambsch 4 months 3 weeks ago
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Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
127 562 By 1970maurizio 2 hours 5 minutes 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.
160 554 By Ruhee 2 hours 52 minutes ago