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Field of View

(FOV, Field of Vision)
(angular measure of how much an optical instrument can view)

The Field of View of an astronomical telescope is the angular area or Solid Angle indicating the amount of the sky the telescope can image at once. The field of view depends both upon the telescope and the instrument in use.


  • HST ACS: 10 square arc-minutes.
  • same, utilizing its HRC (High Resolution Channel): 0.15 square arc-minutes.
  • UK Schmidt Telescope (UKST): 30 square degrees.

The term may occasionally be used to refer to the range of Surveys, as both Field of View and Range indicate a portion of the sky covered.


Referenced by:
Atacama Large Millimeter Array (ALMA)
Allen Telescope Array (ATA)
CCAT Prime (CCAT-p)
Focal Length
Fsky (fsky)
Large Synoptic Survey Telescope (LSST)
Palomar 48 Inch Telescope (P48)
Pi Of The Sky
Pulsar Timing Array (PTA)
Schmidt Camera
Solid Angle (Ω)
Subaru Telescope
Survey Field
Tomographic Ionized-Carbon Mapping Experiment (TIME)
UK Schmidt Telescope (UKST)
VLT Survey Telescope (VST)
Westerbork Synthesis Radio Telescope (WSRT)