Astrophysics (index)about

Continuous Viewing Zone

(CVZ)
(region of sky that can be viewed 7x24x365)

A telescope's Continuous Viewing Zone (CVZ) is that region of the Celestial Sphere that the telescope can view at any time. For space missions, areas sometimes blocked by the Earth or Sun would be excluded. The concept is of less use for Earth-bound telescopes, but seems relevant to Radio Telescopes not close to the equator, i.e., a region around the pole can be viewed day and night all year.


(telescopes)
http://en.wikipedia.org/wiki/Hubble_Deep_Field

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