Hubble Deep Field (HDF) meydân-e žarf-e Hubble (#) Fr.: champ profond de Hubble An image of a small region in the constellation → Ursa Major, based on the results of a series of observations by the → Hubble Space Telescope. The image was assembled from 342 separate exposures taken over ten consecutive days between December 18 and December 28, 1995. It covers an area 144 arcseconds across. |