The Two Micron All Sky Survey (2MASS)

doi:10.1086/498708

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The Astronomical Journal Volume 131 Number 2 Create an alert RSS this journal

M. F. Skrutskie et al. 2006 The Astronomical Journal 131 1163 doi:10.1086/498708

The Two Micron All Sky Survey (2MASS)

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M. F. Skrutskie^1,2, R. M. Cutri³, R. Stiening¹, M. D. Weinberg¹, S. Schneider¹, J. M. Carpenter⁴, C. Beichman⁵, R. Capps⁵, T. Chester³, J. Elias⁶, J. Huchra⁷, J. Liebert⁸, C. Lonsdale³, D. G. Monet⁹, S. Price¹⁰, P. Seitzer¹¹, T. Jarrett³, J. D. Kirkpatrick³, J. E. Gizis¹, E. Howard¹, T. Evans³, J. Fowler³, L. Fullmer³, R. Hurt³, R. Light^3,12, E. L. Kopan³, K. A. Marsh⁵, H. L. McCallon³, R. Tam³, S. Van Dyk³ and S. Wheelock³

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¹ Department of Astronomy, University of Massachusetts, Amherst, MA 01003
² Current address: Department of Astronomy, P.O. Box 3818, University of Virginia, Charlottesville, VA 22903-0818
³ Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125
⁴ Department of Astronomy, California Institute of Technology, Pasadena, CA 91125
⁵ Jet Propulsion Laboratory, Pasadena, CA 91109
⁶ National Optical Astronomy Observatory, Tucson, AZ 85726
⁷ Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138
⁸ Department of Astronomy, University of Arizona, Tucson, AZ 85721
⁹ US Naval Observatory, Flagstaff Station, Flagstaff, AZ 86002
¹⁰ Air Force Research Laboratory, Hanscom Air Force Base, MA 01731
¹¹ Department of Astronomy, University of Michigan, Ann Arbor, MI 48109
¹² Deceased, 1998 May 20

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Abstract References Cited By

Between 1997 June and 2001 February the Two Micron All Sky Survey (2MASS) collected 25.4 Tbytes of raw imaging data covering 99.998% of the celestial sphere in the near-infrared J (1.25 μm), H (1.65 μm), and K_s (2.16 μm) bandpasses. Observations were conducted from two dedicated 1.3 m diameter telescopes located at Mount Hopkins, Arizona, and Cerro Tololo, Chile. The 7.8 s of integration time accumulated for each point on the sky and strict quality control yielded a 10 σ point-source detection level of better than 15.8, 15.1, and 14.3 mag at the J, H, and K_s bands, respectively, for virtually the entire sky. Bright source extractions have 1 σ photometric uncertainty of <0.03 mag and astrometric accuracy of order 100 mas. Calibration offsets between any two points in the sky are <0.02 mag. The 2MASS All-Sky Data Release includes 4.1 million compressed FITS images covering the entire sky, 471 million source extractions in a Point Source Catalog, and 1.6 million objects identified as extended in an Extended Source Catalog.

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