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R.J. Hill (Raytheon ITSS/GSFC), A. Waczynski, E.J. Polidan, S.D. Johnson (GST/GSFC), L. Cawley (STScI), E.S. Cheng (GSFC)
Wide Field Camera 3 (WFC3) is an instrument being developed for installation on the Hubble Space Telescope in 2003. The instrument will include blue optimized CCDs in a near-UV/visible channel and a Mercury-Cadmium-Telluride (MCT) array in a near-IR channel. Engineering grade prototype CCD detectors from Marconi Applied Technologies and MCT detectors from Rockwell Science Center have recently been obtained by the project. The MCT detectors employ a new multiplexer, based on the earlier Hawaii-1 and Hawaii-2 designs. We present results from the initial testing of these devices, emphasizing the performance parameters that are most important in defining the scientific capabilities of WFC3. All of the testing was performed at the Detector Characterization Laboratory at Goddard Space Flight Center.