Forum Topics Posts Last post
No new posts
Ask questions on any topic. Nothing is too simple or too complex to ask!
931 3868 By ACN 1 week ago
No new posts
4 70 By hlaird 1 month 3 weeks ago
No new posts
Technical support for questions about the AAVSO web site and/or forums. Report bugs here.
188 847 By BSJ 2 weeks 1 day ago
No new posts
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 1 week 2 days ago
No new posts
Discussion of AAVSO-related software projects (VSX, Zapper, etc.).
137 869 By olichris 2 weeks ago
No new posts
A forum to discuss variable star data analysis.
88 477 By purdy 1 week 1 day ago
No new posts
Discussion of the AAVSO's visualization and analysis tool, VStar
147 1161 By clkotnik 2 days 19 hours ago
No new posts
For discussion of VSX, the AAVSO Variable Star Index.
116 486 By swadhwa 1 week 4 days ago
No new posts
Questions, discussions and announcements related to Eggen Card Project.
8 23 By SGEO 2 months 3 weeks ago
No new posts
Citizen Sky questions, announcements and discussion.
7 13 By onj 3 months 3 weeks ago
Forum Topics Posts Last post
No new posts

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.

62 524 By Achim Sucker 15 hours 43 minutes ago
No new posts
Please use this forum to distribute time sensitive observation alerts.
302 1494 By weo 18 hours 32 minutes ago
No new posts
17 102 By ASUTOSH 6 days 5 hours ago
No new posts
Discuss ongoing campaigns (Alert Notices, Special Notices, etc.), announce your own projects and report interesting observations here.
410 2933 By FRF 4 hours 45 minutes ago
No new posts
Discussion of and tips for making visual observations.
196 1181 By tomstock 1 month 2 weeks ago
No new posts
Discussion of CCD, PEP and DSLR photometry.
657 4944 By arx 8 minutes 3 seconds ago
No new posts
221 1548 By weo 17 hours 20 minutes ago
No new posts
This forum is for discussion of AAVSOnet topics including announcements, status updates, technical support and more.
285 891 By HQA 1 month ago
No new posts
This forum is for discussion of VPHOT topics including announcements, status updates, technical support and more.
533 2822 By MZK 20 hours 18 minutes ago
Forum Topics Posts Last post
No new posts
This forum is for discussions of cataclysmic variable stars.
301 1050 By IanKemp 18 hours 42 minutes ago
No new posts
10 25 By alschmitt 4 months 2 weeks ago
No new posts

Information on the observation and analysis of stars and other objects that are sources of x-rays and gamma rays.

16 112 By daveh 3 weeks 1 day ago
No new posts

Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

9 34 By Bernhard 5 days 22 hours ago
No new posts
Discussion of eclipsing binary stars.
47 293 By bpablo 2 months 2 weeks ago
No new posts
49 225 By psychwolf 1 week ago
No new posts
Discussion of long period variable stars: mira's, semiregulars, etc.
147 776 By croberrw 3 days 14 hours ago
No new posts
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.
178 1200 By weo 17 hours 20 minutes ago
No new posts
Discussion of RCBs and related classes of stars that show irregular fading episodes.
54 219 By MDJ 5 months 1 week ago
No new posts
Discussion for the solar observation program and also monitoring of sudden ionospheric disturbances (SIDs).
119 532 By maxsurlaroute 5 days 8 hours ago
No new posts
Discussion of young stellar objects, pre-main sequence stars and other variable objects in the early stages of stellar evolution.
135 435 By weo 13 hours 26 minutes ago