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Wide field and diffraction limited array camera for SIRTFThe 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 will be used: 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 nondestructive 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, and (4) the capability for broad and narrow bandwidth spectral resolution. A strategy has been developed to minimize the total electronic and environmental noise sources to satisfy the scientific requirements.
Document ID
19870032400
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fazio, G. G.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Koch, D. G.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Melnick, G. J.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Tresch-Fienberg, R. M.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Willner, S. P.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Gezari, D. Y.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Lamb, G.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Shu, P.
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Chin, G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mccreight, C. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
Spacecraft Instrumentation
Accession Number
87A19674
Distribution Limits
Public
Copyright
Other

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