BUFFALO is dedicated to enlarging the sky area covered by the six Hubble Frontier Fields (HFF) that focused on very rich galaxy clusters, originally with the aim of exploiting their gravitational fields as "cosmic telescopes" to study very distant galaxies in unprecedented detail. BUFFALLO expands the are covered by about 4 times, allowing astronomers to map with more fidelity the total mass distribution (both ordinary and dark matter) of these 6 massive galaxy clusters in order to learn more about their evolution and about the nature of the mysterious dark matter.
This image shows the first 4 visits of the first cluster (Abell 370) by the Hubble Space Telescope (HST). The mosaic image consists of HST's filters F105W, F125W, and F160W in the near-infrared.
BUFFALO extends the area surveyed by HST for 6 Frontier Field Clusters by about 4 times. This will enable us to study the outskirts of these galaxy clusters as well as to find more lensed galaxies in the background. These will open new doors for the exploration of galaxy formation in the early Universe.