Two-dimensional infrared speckle interferometry with a 32 X 32 InSb charge-injection device (CID) array

Details Two-dimensional infrared speckle interferometry with a 32 X 32 InSb charge-injection device (CID) array Two-dimensional infrared speckle interferometry with a 32 X 32 InSb charge-injection device (CID) array

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..331...26s&link_type=abstract

IN: Instrumentation in astronomy IV; Proceedings of the Fourth Conference, Tucson, AZ, March 8-10, 1982 (A83-31976 14-35). Belli

Astronomy and Astrophysics

Astronomy

2

Charge Injection Devices, Indium Antimonides, Infrared Astronomy, Infrared Interferometers, Infrared Telescopes, Speckle Patterns, Carrier Injection, Chips (Electronics), Cryogenic Cooling, Infrared Detectors, Infrared Imagery, Infrared Stars, Quantum Efficiency, Semiconductor Devices, Signal To Noise Ratios

Scientific paper

The conditions which have to be satisfied to take full advantage of the speckle method are considered. It is found that InSb arrays of infrared detectors with a 32 x 32 format satisfy these conditions with telescopes of the 4 m class and with seeings up to 2 arc seconds at 2 microns, or up to 5 arc seconds at 5 microns. An InSb CID array, type Z 7844, of 32 x 32 elements with 72 x 72 micro sq m pixel pitch and 52 x 52 micro sq m pixel effective collection area providing a filling factor of 70 percent was manufactured by an American company. The first astronomical tests were performed with the array in October 1981. The array was used at the infrared focus of the 2.1 m telescope of the Kitt Peak National Observatory. Two infrared speckled images of the star Beta Peg are shown. The images were obtained at 3.5 and at 5 microns.

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