An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک



Hubble Deep Field (HDF)
  میدان ِ ژرف ِ هابل  
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.

See also:Hubble; → deep;
field.