mars 2012

A call for observations of the famous symbiotic star, one of the brightest, CH cyg has been launched by Margaritta Karovska. This is to support observations planned for the next two weeks in X ray (CHANDRA) and otical/UV (HST) domains. Observations are gathered on this page by the ARAS group http://www.astrosurf.com/aras/surveys/chcyg/index.html A run of three weeks of observations is ongoing with my eshell spectrograph and 0.35m LX200 telescope. I organized my observing session is divide in two parts. First part until... [Lire la suite]

FF cam is the weirdest thing i had never observed. Daily spectras are differents, intensities variation, shape, double or single peak, all configurations of the h alpha line for a Be star are possible. 4 differents observers are following this challenging star. Three echelle spectrographs (Eshell) and one long slit H alpha centered spectrograph (LhiresIII) with telescopes from 0.28m to 0.80m. 3 in Europe and 1 in US. Summary of the H alpha profiles: http://www.astrosurf.com/garrel/webFFcam_March19/Vspec_objet.html And some plots... [Lire la suite]

Miroshnichenko_DeltaSco_Iguassu_2012 Talk of Anatoly Miroshnichenko on delta sco 2010/2011 at Feb, 2012 ESO conference on hot stars in Brazil