Fall Meeting: Presentation Files
Below are presentation files that are available for download (as ppt or pdf files) from the 99th Annual Meeting of the AAVSO. Click on the title to view or download the presentation file.
front page news
All nodes that have this tag will posted to the home page "Recent Activity" block
Meetings Survey
Rebecca and I have put together a 8-item survey about AAVSO meetings. The goal of this survey is to give us information about what is important to you when you make decisions about meeting attendance. It includes questions about preferred locations, meeting structure, content of talks, etc. If you have a moment, please give us 5-10 minutes to take the survey. We would like everyone interested to take the survey, whether you have attended a prior meeting or not.
Special Notice #222: Bright Supernova in UGC 5189A: SN 2010jl
November 5, 2010: We have been informed by Tim Puckett and by the Central Bureau for Astronomical Telegrams (CBET 2532, Daniel W. E. Green, Ed.) of the discovery of a bright possible supernova in UGC 5189A by J. Newton and Puckett, Portal, AZ, on November 3.52 UT at unfiltered magnitude 13.5. Confirming images (limiting magnitude 19.1) by Puckett on Nov. 4.50 UT showed the object at magnitude 12.9./p>
Special Notice #221: Infrequent Outburst of the SU UMa Variable HT Cas
November 2, 2010: As reported by Tim Parson (Circle Pines, Minnesota, USA) and confirmed by Pavol Dubovsky (Kolonica, Slovakia), the infrequently-outbursting dwarf nova HT Cas is in outburst. Parson observed HT Cas in outburst at m(vis)=12.9 on JD 2455502.93 (2010 November 2.43), and the outburst was confirmed by Dubovsky at m(vis)=12.4 on JD 2455503.3 (2010 November 2.8). The last confirmed well-observed outburst of this star occurred on 2008 January 10. Observations of this variable are strongly encouraged at this time. Both visual and CCD observations are en
Special Notice #220: Request for observations of high-mass X-ray binaries (HMXBs) in support of radial velocity observations
HMXB campaign extended until further notice. - Elizabeth O. Waagen, 17 April 2020
It has been updated numerous times and covered in AAVSO Alert Notices 348, 354, and 377, and in AAVSO Special Notices #118, #129, #143, #213, and #220.
AAVSO Newsletter 46
The October 2010 issue of the AAVSO Newsletter is now available
Special Notice #219: Eclipse of the symbiotic star CI Cygni
October 12, 2010: As noted by U. Munari et al (ATel #2913, 2010 October 9), the symbiotic star CI Cygni is currently undergoing an eclipse of the outbursting star. CI Cyg has declined from about magnitude 9.7 in late August 2010 to V=11.1 currently.
AAVSO Abstracts 1951 - 1971
This is part of our ongoing series to highlight new features of the new AAVSO web site.
Matt Templeton scanned all of the abstracts and put them online in PDF format. The abstracts cover items presented at meetings, but often include much more info than a modern day abstract. For example, the last issue includes abstracts that are over 3 pages long, meeting memories, history of the AAVSO articles and even a poem! Here is his description of the abstracts from the first paragraph on the web page:
AAVSO 2011 Calendar Survey
The AAVSO is making another calendar! The calendar for 2011, our Centennial year, and will include lots of AAVSO historical notes - important dates, pictures of how variable star observing has evolved in the last 100 years, notes about the legacy of our Directors. We're still planning the last details, but we expect the cost to be between $10 and $15 each (including shipping). We're planning on having the calendars finished and ready to ship out during November. This is one memento from the AAVSO that you don't want to miss!