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The Infrared Array Camera (IRAC) for the Spitzer Space Telescope

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G. G. Fazio1, J. L. Hora1, L. E. Allen1, M. L. N. Ashby1, P. Barmby1, L. K. Deutsch1,2, J.-S. Huang1, S. Kleiner1, M. Marengo1, S. T. Megeath1, G. J. Melnick1, M. A. Pahre1, B. M. Patten1, J. Polizotti1, H. A. Smith1, R. S. Taylor1, Z. Wang1, S. P. Willner1, W. F. Hoffmann3, J. L. Pipher4, W. J. Forrest4, C. W. McMurty4, C. R. McCreight5, M. E. McKelvey5, R. E. McMurray5, D. G. Koch5, S. H. Moseley6, R. G. Arendt6, J. E. Mentzell6, C. T. Marx6, P. Losch6, P. Mayman6, W. Eichhorn6, D. Krebs6, M. Jhabvala6, D. Y. Gezari6, D. J. Fixsen6, J. Flores6, K. Shakoorzadeh6, R. Jungo6, C. Hakun6, L. Workman6, G. Karpati6, R. Kichak6, R. Whitley6, S. Mann6, E. V. Tollestrup7, P. Eisenhardt8, D. Stern8, V. Gorjian8, B. Bhattacharya9, S. Carey9, B. O. Nelson9, W. J. Glaccum9, M. Lacy9, P. J. Lowrance9, S. Laine9, W. T. Reach9, J. A. Stauffer9, J. A. Surace9, G. Wilson9, E. L. Wright10, A. Hoffman11, G. Domingo11 and M. Cohen12

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The Infrared Array Camera (IRAC) is one of three focal plane instruments on the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broadband images at 3.6, 4.5, 5.8, and 8.0 μm. Two nearly adjacent 5farcm2 × 5farcm2 fields of view in the focal plane are viewed by the four channels in pairs (3.6 and 5.8 μm; 4.5 and 8 μm). All four detector arrays in the camera are 256 × 256 pixels in size, with the two shorter wavelength channels using InSb and the two longer wavelength channels using Si:As IBC detectors. IRAC is a powerful survey instrument because of its high sensitivity, large field of view, and four-color imaging. This paper summarizes the in-flight scientific, technical, and operational performance of IRAC.


Subject headings

infrared: general; instrumentation: detectors; space vehicles: instruments


Dates

Issue 1 (2004 September)

Received 2004 March 26, accepted for publication 2004 May 26



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