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Suggested Observing Cadences for Variable Star Types

Something you need to consider carefully, and a question that comes up often with new observers is "How often should I observe my program stars?" The answers depend largely on the type of stars you are observing. The following table is a general guideline. As you learn more about the different types of variables, and the personalities of some of the specific stars you choose to observe, you may decide to observe them more or less often than suggested here.

Variable Type

AAVSO Times of Maxima and Minima of Long Period Variables: Current data

These data consist of formally published data for the years 1900 to 2008, and data for the years 2009 through the present for a subset of these stars.  Data from 2009 to the present were those used for calculations of the AAVSO Bulletin, and are considered preliminary.  For a description of this data set, please click here.

Stars with maxima and minima data are as follows:

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 49 Bay State Rd. Cambridge, MA 02138 617-354-0484