Compass and Scale Image of Abell 2744
Abell 2744, Pandora's Cluster
These findings were supported by the HST archival grant 13279, PI: W. Zheng (JHU), A. Zitrin (Caltech), Holland Ford (JHU), J. Moustakas (Siena College), F. Bauer and L. Infante (Pontificia Universidad Católica de Chile), and D. Kelson Carnegie Institution of Washington.
The science team comprises: A. Zitrin (Caltech), W. Zheng (JHU), T. Broadhurst (University of Basque Country, Spain), J. Moustakas (Siena College), D. Lam (University of Hong Kong), X. Shu (CEA Saclay-DSM/IRFU/Service d'Astrophysique and University of Science and Technology of China), X. Huang (JHU and University of Science and Technology of China), J. Diego (IFCA/CSIC Universidad de Cantabria, Spain), H. Ford (JHU), and J. Lim (University of Hong Kong).
ACS/WFC: F435W (B), F606W (V), F814W (I)
WFC3/IR: F105W (Y), F125W (J), F140W (JH), F160W (H)
This image is a composite of separate exposures acquired by the ACS and WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:
Blue: F435W (B) + F606W (V)
Green: F814W (I) + F105W (Y)
Red: F125W (J) + F140W (JH) + F160W (H)
Blue: F814W (I)
Green: F105W (Y)
Red: F160W (H)