Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994exa.....3..195v&link_type=abstract
Experimental Astronomy, vol. 3, no. 1-4, p. 195-203
Astronomy and Astrophysics
Astronomy
Arrays, Focal Plane Devices, Hubble Space Telescope, Infrared Detectors, Infrared Spectrometers, Mercury Cadmium Tellurides, Near Infrared Radiation, Astronomical Spectroscopy, Infrared Astronomy, Infrared Spectroscopy, Multiplexing, Quantum Efficiency
Scientific paper
Rockwell has developed the 256 x 256 Near Infrared Camera and Multi-Object Spectrometer 3 (NICMOS3) FPA for the Hubble Space Telescope under funding from NASA through the University of Arizona. Since 1989, dozens of science grade devices have been delivered to astronomers throughout the world for ground based infrared observations. These devices have excellent sensitivity at 77 K with mean dark currents of 0.1 e(-)/s, noise of 25 e(-), and quantum efficiency of 55-70%. Pixel yields as high as 99.9% have been achieved. Our present plans are to develop a 1024 x 1024 focal plane array (FPA) with 2.5 micron cutoff and make it available to astronomers. Such large arrays are made possible by the advances in detector material size (3 in. diameter producible alternative to CdTe for epitaxy (PACE-I) wafers), multiplexer advances (ability to verify the design in detail and availability of advanced foundries), and novel hybridization and reliability approaches.
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