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VStar version 2.15.1 has just been released. If you have been using VStar already, the new version will be automatically downloaded next time you open it. If you have never used VStar before (or don't know what it is) then you can learn about it and download the latest version from this page:
http://www.aavso.org/vstar-overview
There are also a lot of fantastic plugins available for VStar which you can get here:
http://www.aavso.org/vstar-plugin-library
We're pleased to note that GCN Circular #14490 has been published, detailing time-series photometry of the bright GRB 130427A by Patrick Wiggins. His observations provide a comprehensive record of the three hours of the early evolution of this incredibly bright afterglow.
Congratulations to Patrick on his observations!
April 22, 2013: Further to AAVSO Alert Notice 471 (http://www.aavso.org/aavso-alert-notice-471), HST/COS is scheduled to observe the eclipsing WZ Sge-type cataclysmic variable QZ Lib:
QZ Lib 2013 Apr 26 14:37:44 through 21:23:30 UT
Revised 2025 October 1 / 2025 January 6, 2023 / June 21, 2022 November 21
Please refer to the current Data Usage Guidelines.
Jump to Formal policy: Acknowledgement for Using AAVSO Data
Jump to Dear Colleague letter from the Director on using AAVSO data
The deadline for hotel reservations for the upcoming spring meeting has been extended to April 22nd! It is not too late to decide to join us at Appalachian State University for this unique meeting. Please visit the Meeting Information Page for details and the registration link.
The March 2013 Solar Bulletin is now available.
The AAVSO Annual Report for FY 2011-2012 is now available online.
AAVSO Newsletter 56 - April 2013
April 9, 2013: In AAVSO Special Notice #346 (http://www.aavso.org/aavso-special-notice-346), IU Leo was said to have a close companion about 2 arcsec to the NE. This is not correct - it is IY UMa that has this close companion.
We extend sincere apologies to Dr. Szkody for misquoting her and to our readers for the error.
This AAVSO Special Notice was compiled by Elizabeth O. Waagen.
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April 8, 2013: Further to AAVSO Alert Notice 471 (http://www.aavso.org/aavso-alert-notice-471) and AAVSO Special Notice #345 (http://www.aavso.org/aavso-special-notice-345), HST/COS is scheduled to observe the eclipsing SU UMa-type dwarf nova RZ Leo:
RZ Leo 2013 Apr 11 07:18:24 through 14:15:5 UT
