The ACS data used in this study was from HST proposal 9289.
The NICMOS data used in this study was from HST proposals: 10150 and 10996.
The archival data used in this study was from Spitzer proposal 20439.
Science Team: L. Bradley (The Johns Hopkins University), R. Bouwens (University of California - Santa Cruz), H. Ford (The Johns Hopkins University), G. Illingworth (University of California - Santa Cruz), M. Jee (University of California - Davis), N. Benítez (Instituto de Matemáticas y Física Fundamental), T. Broadhurst (Tel Aviv University), M. Franx (Leiden Observatory), B. Frye (Dublin City University), L. Infante (Pontificia Universidad Católica), V. Motta (Universidad de Valparaíso), P. Rosati (European Southern Observatory), R. White (Space Telescope Science Institute), and W. Zheng (The Johns Hopkins University).
F475W (g), F625W (r), F775W (i), and F850LP (z)
The color image of Abell 1689 is a composite of separate exposures made by the ACS instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
Blue: F475W (g)
Green: F625W (r)
Red: F850LP (z)