AAVSO Bulletin 75 for 2012 - Letter to Observers
Letter to Users of 2012 Bulletin and Some AAVSO Bulletin History
February 2012
Dear Observers,
maxima
AAVSO Bulletin 75 for 2012 - Introduction
AAVSO Bulletin 75: Predicted Dates of Maxima and Minima of
381 Long Period Variables for 2012
Elizabeth O. Waagen, Senior Technical Assistant
Matthew R. Templeton, Ph.D, Science Director
AAVSO, 49 Bay State Road, Cambridge, MA 02138 USA
AAVSO Bulletin 75 - Stars with Double Maxima
In AAVSO Bulletin 75 there are two stars that exhibit double maxima: R Cen and R Nor. These stars therefore have primary and secondary maxima and minima. They are not included in the main Bulletin table. Their predicted dates of maximum and minimum for January 2012 through February 2013 are presented here in list form (JD and Gregorian calendar dates) and in approximation of the main Bulletin table format.
AAVSO Bulletin 74 for 2011- Introduction
Introduction to Bulletin 74
AAVSO Bulletin 74: Predicted Dates of Maxima and Minima of
371 Long Period Variables for 2011
Elizabeth O. Waagen, Senior Technical Assistant
Matthew R. Templeton, Ph.D, Science Director
AAVSO, 49 Bay State Road, Cambridge, MA 02138 USA
AAVSO Bulletin 74 for 2011- Letter to Observers
Letter to Users of 2011 Bulletin
February 2011
Dear Observers,
AAVSO BULLETIN 74 -Stars with Double Maxima
In Bulletin 74 there are three stars that exhibit double maxima: V Boo, R Cen, and R Nor. These stars therefore have primary and secondary maxima and minima. They are not included in the main Bulletin table. Their predicted dates of maximum and minimum for January 2011 through February 2012 are presented here in list form (JD and Gregorian calendar dates) and in approximation of the main Bulletin table format.
AAVSO Bulletin 74 for 2011 - How to Use the Bulletin
AAVSO Bulletin 74 - Predicted Dates of Maxima and Minima of Long Period Variables for 2011 - is published in a new format. The information that was included in earlier numbers of the Bulletin is included in this new format, along with more information. This year the Bulletin does not include stars that do not have an AAVSO mean curve.
AAVSO Bulletin 73 for 2010 - Stars in Need of Observations
STARS IN NEED OF OBSERVATIONS
in
AAVSO BULLETIN 73: Predicted Maxima and Minima of Long Period Variables for 2010
The stars listed below need additional observations. Please be aware that many of these
stars are difficult to observe, and should be observed only by experienced observers.
Please note that the symbol % after a star name indicates the star has fair to excellent
CCDV or multicolor photometry but still needs visual observations.AAVSO Bulletin 73 for 2010 - How to Use the Bulletin
How to Use Bulletin 73
IMPORTANT NOTICE:
Bulletin 73 was NOT prepared in the same way as in the past. Please be sure to READ THE INTRODUCTION before you use the Bulletin; contact AAVSO Headquarters if you have questions.