Pretty Picture of a Cluster of Galaxies:
WIYN image of Abell 98:A rich cluster of galaxies at a redshift of 0.105. The image was made from R and I images taken with the WIYN telescope when the seeing was 0.45 arcsec. Measures of the angular size of these galaxies combined with measurements of the internal velocities of their stars (using the multi-fiber spectrograph on WIYN) allows the distance of this cluster to be measured using the Fundamental Plane of elliptical galaxies.
TeachingA2310: General Astronomy (Spring 2007)
Director Wyoming Infared Observatory (WIRO) 2003-2006WIRO Observatory