Morphology Of Gravitationally Lensed Galaxies

The compound optical system formed by the Hubble Space Telescope and a 200 kpc diameter gravitational objective lens provides an unprecedented view of a distant star forming galaxy in the UV. We describe a high resolution reconstruction of the UV image of the high redshift galaxy behind the z = 0.4 cluster 0024+/-1654. Using a simultaneous parametric solution for the source morphology and the gravitational lens mass distribution, we have found a robust unique solution for the source galaxy: all five arcs map back through the lens to give the same source-plane image. The reconstructed image of this forming galaxy, has 7 milliarcsec pixels, or 200 pc resolution in two rest-frame bands: 1800+/-200 Angstrom, and 3300+/-400 Angstrom.