[vsnet-chat 52] Re: Eclipsing stars ephemeris

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

Information from Roger Diethelm:  (thanks a lot!)

From diethelm@neptun.astro.unibas.ch Tue Feb 11 18:28 JST 1997
Date: Tue, 11 Feb 1997 10:20:46 +0100
From: Roger Diethelm <diethelm@neptun.astro.unibas.ch>
To: tkato@kusastro.kyoto-u.ac.jp
Subject: Re: [vsnet-chat 46] Re: Eclipsing stars ephemeris
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Dear Mr. Kato,

The BBSAG is a group of Swiss amateur astronomers which have followed the period behaviour of 
eclipsing binary stars for over 40 years. We have determined almost 40'000 minima of about 800 
different variables in this period by visual, photoelectric an CCD means. Together with the BAV 
data base, we are able to inform prospectic observers on the currently applicable corrections 
(O-C values) to the GCVS ephemeris for most of the visually observable eclipsing binaries in the 
northern sky. If information is needed, I would supply it willingly. I can be reached by e-mail 
at the address given below.

With my best whishes

Roger Diethelm
BBSAG
Rennweg 1
CH-4118 Rodersdorf
Switzerland

e-mail: diethelm@astro.unibas.ch
internet: http://vsnet.astro.unibas.ch

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