Dear colleagues,
don´t forget to observe the next periastron passage on February 1th 2021!!
This time there are very good opportunities to observe totally the rise and the descent of the parameters EW, V/R, RV and CA.
Ernst Pollmann
28 Tauri
Moderator: Michael Keiser
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Ernst Pollmann
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28 Tauri
Ernst Pollmann
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International Working Group ASPA
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
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International Working Group ASPA
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de