prime focus


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prime focus

The focal plane in which the image of the primary mirror or objective lens of a telescope forms, in the absence of other optical components.

prime focus

[′prīm ′fō·kəs]
(optics)
The position in a reflecting telescope at which light from celestial objects is focused by the main mirror, located on the axis of the mirror near the open end of the tube.
References in periodicals archive ?
In prime focus shooting, light from the lens directly enters the image sensor; the image is not routed through a prism or eyepiece.
Mark Tranter, regeneration manager at Prime Focus, said: 'The redevelopment of the Radleys estate is a great opportunity for a community to start again.
The move into China closely follows the recent joint venture between Prime Focus Limited, AID Partners Capital and Zhejiang Jingqi Wenhua Chuanbo Company Limited.
The developer was Prime Focus and the scheme, Oakwood Lodge in Chaucer Avenue, Walsall, Retirement category winner in this year's Birmingham Post & Mail House Design Awards.
Prime focus today will fall on Bernanke's Senate testimony later today, though Bernanke pre-empted his appearance with a column in the WSJ reiterating that policy will remain accommodative but offering four different exit strategy scenarios for when the time came.
Prime Focus is the UK's first and largest social investment agency which helps to improve the lives of those experiencing disadvantage.
The event is taking place at the Royal Banqueting Suite, in Birchfield Road, Aston, and West Midlands Police, MG Rover, the NHS and social investment agency Prime Focus have signed up to exhibit at the event, which is raising cash for the Lord Mayor's charities.