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AAVSO Bulletin 75 for 2012 - Letter to Observers

Letter to Users of 2012 Bulletin and Some AAVSO Bulletin History

                                                                                                                                     February 2012

Dear Observers,

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 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. Because all of the 

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.

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AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484