Laboratory and telescope use of the NICMOS2 128 X 128 HgCdTe array

Details Laboratory and telescope use of the NICMOS2 128 X 128 HgCdTe array Laboratory and telescope use of the NICMOS2 128 X 128 HgCdTe array

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989stin...9021338r&link_type=abstract

In NASA, Ames Research Center, Proceedings of the Third Infrared Detector Technology Workship p 321-330 (SEE N90-21313 14-35)

Astronomy and Astrophysics

Astronomy

Astronomy, Diodes, Field Effect Transistors, Hubble Space Telescope, Infrared Spectrometers, Mercury Cadmium Tellurides, Near Infrared Radiation, Cameras, Electrons, Low Noise, Readout, Sampling, Sapphire, Substrates, Switching

Scientific paper

The second generation of Hubble Space Telescope (HST) instruments will include a near-infrared instrument. This choice has driven the development of near-infrared arrays to larger sizes and lower read noises. Rockwell International has delivered an array for use in the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) instrument; this array has been dubbed NICMOS2. NICMOS2 is a 128x128 array of HgCdTe diodes In-bonded to a switched MOSFET readout. The readout was specifically designed for astronomical use with the HST requirement of low read noise a prime goal. These arrays use detector material which is similar to that used by Rockwell in previous arrays (e.g., HgCdTe produced on a sapphire substrate), but the NICMOS2 devices differ substantially from other 128x128 arrays produced by Rockwell in having a read noise of only 30 electrons when read out using appropriate correlated sampling. NICMOS2 has now been characterized in the laboratory, and it has been used on groundbased telescopes.

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