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The COSMOS Survey: Hubble Space Telescope Advanced Camera for Surveys Observations and Data Processing

Koekemoer, A. M. and Aussel, H. and Calzetti, D. and Capak, P. and Giavalisco, M. and Kneib, J.-P. and Leauthaud, A and Le Fèvre, O. and McCracken, H. J. and Massey, R. and Mobasher, B and Rhodes, J. and Scoville, N. and Shopbell, P. L. (2007) The COSMOS Survey: Hubble Space Telescope Advanced Camera for Surveys Observations and Data Processing. Astrophysical Journal Supplement Series, 172 (1). pp. 196-202. ISSN 0067-0049. doi:10.1086/520086.

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We describe the details of the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) Wide Field Channel (WFC) observations of the COSMOS field, including the data calibration and processing procedures. We obtained a total of 583 orbits of HST ACS/WFC imaging in the F814W filter, covering a field that is 1.64 deg^2 in area, the largest contiguous field ever imaged with HST. The median exposure depth across the field is 2028 s (one HST orbit), achieving a limiting point-source depth AB(F814W) = 27.2 (5 σ). We also present details of the astrometric image registration and distortion removal and image combination using MultiDrizzle, motivating the choice of our final pixel scale (30 mas pixel^(-1)), based on the requirements for weak-lensing science. The final set of images are publicly available through the archive sites at IPAC and STScI, along with further documentation on how they were produced.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Koekemoer, A. M.0000-0002-6610-2048
Aussel, H.0000-0002-1371-5705
Calzetti, D.0000-0002-5189-8004
Capak, P.0000-0003-3578-6843
Giavalisco, M.0000-0002-7831-8751
Kneib, J.-P.0000-0002-4616-4989
Leauthaud, A0000-0002-3677-3617
Le Fèvre, O.0000-0001-5891-2596
McCracken, H. J.0000-0002-9489-7765
Massey, R.0000-0002-6085-3780
Rhodes, J.0000-0002-4485-8549
Scoville, N.0000-0002-0438-3323
Alternate Title:The COSMOS Survey: Hubble Space Telescope / Advanced Camera for Surveys (HST/ACS) Observations and Data Processing
Additional Information:© 2007 The American Astronomical Society. Received 2006 November 30; accepted 2007 March 5. The COSMOS HST Treasury program was supported through NASA grant HST-GO-09822. We wish to thank Tony Roman, Denise Taylor, and David Soderblom for their assistance in the planning and scheduling of the extensive COSMOS observations. We gratefully acknowledge the contributions of the entire COSMOS collaboration, consisting of more than 70 scientists. More information on COSMOS is available at We acknowledge the services provided by the staff at the NASA IPAC/IRSA, as well as the STScI MAST Archive for providing online archive and server capabilities for the COSMOS data sets. The COSMOS Science meeting in 2005 May was supported in part by the NSF through grant OISE-0456439.
Group:COSMOS, Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:cosmology : observations; dark matter; galaxies : evolution; galaxies : formation; large-scale structure of universe; surveys
Issue or Number:1
Record Number:CaltechAUTHORS:20100223-104415226
Persistent URL:
Official Citation:The COSMOS Survey: Hubble Space Telescope Advanced Camera for Surveys Observations and Data Processing A. M. Koekemoer, H. Aussel, D. Calzetti, P. Capak, M. Giavalisco, J.-P. Kneib, A. Leauthaud, O. Le Fèvre, H. J. McCracken, R. Massey, B. Mobasher, J. Rhodes, N. Scoville, and P. L. Shopbell 2007 ApJS 172 196-202 doi: 10.1086/520086
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17563
Deposited By: Tony Diaz
Deposited On:02 Mar 2010 18:01
Last Modified:08 Nov 2021 23:36

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