[vsnet-chat 3784] Delta Cephei

[Afoevb@aol.com]

Ref. : vsnet-chat 3764, 3765, 3775, 3779
In order to illustrate the chapter "Distance of a cepheid" in "Astronomie : 
methodes et calculs" (Astronomy : methods and calculations) by Agnes Acker 
and Carlos Jaschek, I observed visually delta Cephei from september to 
december 1979. From only 82 visual observations and 5 photovisual 
measurements made by Dietmar Bohme, I obtained a period of 5,373920 d using 
the method described by Cuno Hoffmeister in "Veranderliche Sterne"
(1970). The difference between this result and the period in GCVS is about 10 
minutes : a more intensive and longer series of observations would, of 
course, have a better result !
E. Schweitzer - AFOEV - afoevb@aol.com

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