Figure: M91, NGC4548

M91 is a spiral galaxy of type SBb in the constellation Coma Berenices. The bar is quite conspicuous. M91 was considered the `lost' Messier object: see the discussion at the Web site of Students for the Exploration and Development of Space. M91 is a member of the Virgo Cluster of galaxies, which is the dominant cluster in our Local Supercluster and about 60 million light-years away. This CCD composite picture was taken in April 1998 at the Kitt Peak 0.9-meter telescope.

Credit: NOAO/AURA/NSF

Downloadable pictures at various resolutions (see NOAO Conditions of Use) at:
http://www.noao.edu/image_gallery/html/im0704.html