13 mars 2010
HD58713, new magnitude record !
Be star, A2Ve spectral type, HD58713 is from magnitude 8.68. New record of low brightness for my setup, Tak CN212 scope, LhiresIII 2400gr/mm and an Atik314L+ ccd camera. The sky was hazy, and not enough exposure time to get a good snr, about 10 here. Hope to achieve better snr, aroud 50 with exellent transparency and much more exposure. My goal was only to make the first specta of this star in Bess database, proud to be first. Following observations will be able to detect outburst of this star, in a quiet phase now. Un... [Lire la suite]