This is Euclid’s Deep Field Fornax. After only one observation, the space telescope already spotted 4.5 million galaxies in this field. In the coming years, Euclid will make 52 observations of this field to reach its full depth.
Euclid’s Deep Field Fornax spans 12.1 square degrees and is located in the southern constellation Fornax, the furnace. It encompasses the much smaller Chandra Deep Field South, a 0.11 square degree region of the sky that has been extensively surveyed in the past couple of decades with NASA’s Chandra and ESA’s XMM-Newton X-ray observatories, as well as the NASA/ESA Hubble Space Telescope and major ground-based telescopes.
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[Image description: On a black background lies an almost square shape with notches cut out of its corners, oriented with its upper and lower edges sloping slightly from top left to bottom right. Contained within the shape are 4.5 million galaxies, and stars of various size, brightness and colour. Some of the brighter stars have diffraction spikes.]