  Using the SHARC-II camera at the Caltech Submillimeter Observatory to obtain
350 micron images of sources detected with the MIPS instrument on Spitzer, we
have discovered a remarkable object at z=1.325+/-0.002 with an apparent
Far-Infrared luminosity of 3.2(+/-0.7) x 10^13 Lsun. Unlike other z>1 sources
of comparable luminosity selected from mid-IR surveys, MIPS J142824.0+352619
lacks any trace of AGN activity, and is likely a luminous analog of galaxies
selected locally by IRAS, or at high redshift in the submillimeter. This source
appears to be lensed by a foreground elliptical galaxy at z=1.034, although the
amplification is likely modest (~10). We argue that the contribution to the
observed optical/Near-IR emission from the foreground galaxy is small, and
hence are able to present the rest-frame UV through radio Spectral Energy
Distribution of this galaxy. Due to its unusually high luminosity, MIPS
J142824.0+352619 presents a unique chance to study a high redshift dusty
starburst galaxy in great detail.
