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Proceedings Paper

Wide Field And Diffraction Limited Array Camera For Sirtf
Author(s): G. G. Fazio; D. G. Koch; G. J. Melnick; R. M. Tresch-Fienberg; S. P. Willner; D. Y. Gezari; G. Lamb; P. Shu; G. Chin; R. Silverberg; J. Mather; W. F. Hoffmann; N. J. Woolf; J. Pipher; W. Forrest; C. R. McCreight
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Paper Abstract

The Infrared Array Camera for the Space Infrared Telescope Facility (SIRTF/IRAC) is capable of two-dimensional photometry in either a wide field or diffraction-limited mode over the wavelength interval from 2 to 30 microns. Three different two-dimensional direct readout (DRO) array detectors are being considered: Band 1 - InSb or Si:In (2 - 5 microns) 128 x 128 pixels, Band 2 - Si:Ga (5 - 18 microns) 64 x 64 pixels, and Band 3 - Si:Sb (18 -30 microns) 64 x 64 pixels. The hybrid DRO readout architecture has the advantages of low read noise, random pixel access with individual readout rates, and non-destructive readout. The scientific goals of IRAC are discussed, which are the basis for several important requirements and capabilities of the array camera: 1) diffraction-limited resolution from 2 - 30 microns, 2) use of the maximum unvignetted field of view of SIRTF, 3) simultaneous observations within the three infrared spectral bands, 4) the capability for broad and narrow bandwith spectral resolution. A strategy has been developed to minimize the total electronic and environmental noise sources to satisfy the scientific requirements.

Paper Details

Date Published: 18 July 1986
PDF: 9 pages
Proc. SPIE 0619, Cryogenic Optical Systems and Instruments II, (18 July 1986); doi: 10.1117/12.966639
Show Author Affiliations
G. G. Fazio, Smithsonian Astrophysical Observatory (United States)
D. G. Koch, Smithsonian Astrophysical Observatory (United States)
G. J. Melnick, Smithsonian Astrophysical Observatory (United States)
R. M. Tresch-Fienberg, Smithsonian Astrophysical Observatory (United States)
S. P. Willner, Smithsonian Astrophysical Observatory (United States)
D. Y. Gezari, NASA/Goddard Space Flight Center (United States)
G. Lamb, NASA/Goddard Space Flight Center (United States)
P. Shu, NASA/Goddard Space Flight Center (United States)
G. Chin, NASA/Goddard Space Flight Center (United States)
R. Silverberg, NASA/Goddard Space Flight Center (United States)
J. Mather, NASA/Goddard Space Flight Center (United States)
W. F. Hoffmann, University of Arizona (United States)
N. J. Woolf, University of Arizona (United States)
J. Pipher, University of Rochester (United States)
W. Forrest, University of Rochester (United States)
C. R. McCreight, NASA/Ames Research Center (United States)


Published in SPIE Proceedings Vol. 0619:
Cryogenic Optical Systems and Instruments II
Ramsey K. Melugin, Editor(s)

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