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SMACS J0723.3–7327
SMACS J0723.3–7327, commonly referred to as SMACS 0723, is a galaxy cluster about 4 billion light years from Earth, within the southern constellation of Volans (RA/Dec = 110.8375, −73.4391667). It is a patch of sky visible from the Southern Hemisphere on Earth and often observed by the Hubble Space Telescope and other telescopes in search of the deep past. It was the target of the Webb's First Deep Field, first full-color image to be unveiled by the James Webb Space Telescope (JWST), imaged using NIRCam, with Spectral density, spectra included, showing objects lensed by the cluster with redshift, redshifts implying they are 13.1 billion years old. The cluster has been previously observed by the Hubble Space Telescope (HST) as part of the MAssive Cluster Survey, Southern MAssive Cluster Survey (SMACS), as well as Planck (spacecraft), Planck and Chandra X-ray Observatory, Chandra. In 2022, in the field gravitationally lensed by SMAC 0723, some of the then most ancient massive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Webb's First Deep Field
Webb's First Deep Field is the first operational image taken by the James Webb Space Telescope (JWST). The deep-field photograph, which covers a tiny area of sky visible from the Southern Hemisphere, is centered on SMACS 0723, a galaxy cluster in the constellation of Volans. Thousands of galaxies are visible in the image, some as old as 13 billion years. The image is the highest-resolution image of the early universe ever taken. Captured by the telescope's Near-Infrared Camera (NIRCam), the image was revealed to the public by NASA on 11 July 2022. Background The James Webb Space Telescope is a space telescope operated by NASA and designed primarily to conduct infrared astronomy. Launched in December 2021, the spacecraft has been in a halo orbit around the second Sun–Earth Lagrange point (L2), about from Earth, since January 2022. At L2, the gravitational pull of the Sun combines with the gravitational pull of the Earth to produce an orbital period that matches Earth's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
