The COSMOS survey: Hubble Space Telescope Advanced Camera for Surveys observations and data processing

  • Koekemoer A
  • Aussel H
  • Calzetti D
 et al. 
  • 59


    Mendeley users who have this article in their library.
  • 331


    Citations of this article.


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 HSTACS/WFC imaging in the F814 W 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. © 2007. The American Astronomical Society. All rights reserved.

Author-supplied keywords

  • Cosmology: observations
  • Dark matter
  • Galaxies: evolution
  • Galaxies: formation
  • Large-scale structure of universe
  • Surveys

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • A.M. Koekemoer

  • H. Aussel

  • D. Calzetti

  • P. Capak

  • M. Giavalisco

  • J.-P. Kneib

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free