Région
de NGC 1275
STL 11000 RC 16"
Retour
Telescope Ritchey Chretien 16" ouvert à F8,4
Monture Paramount ME
CCD Sbig STL 11000 AOL (0.06Sec) Filtres Astrodon
1h20 de pose pour la luminance, 1h00 par couche RGB
NGC 1275 was one of William Herschel's discoveries; he found it on October 17, 1786. John Herschel included it in the GC from observations of d'Arrest and apparently never observed it himself.
It is the dominant member of the Perseus Cluster of
Galaxies and a strong radio source, therefore named Perseus A, and 3C 84 from
its entry in the 3rd Cambridge Catalogue of Radio Sources. It is also a strong
X-ray source. Its nucleus shows emission lines and is of Seyfert type 1 -
this galaxy was in Carl Seyfert's original list of galaxies with peculiar
emission lines in their nucleus, now called Seyfert galaxies. Filaments of
gaseous material are moving explosively outward at 1500 miles per second.
infos: Hartmut Frommert
Christine Kronberg