primary mirror

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primary mirror

n
(Astronomy) the mirror that collects and focuses the incoming light in a reflecting telescope
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive
The 8-inch RASA features a new focuser system with two sets of precision bearings designed to mitigate lateral movement of the primary mirror when slewing, focusing, or tracking the sky.
Now, researchers are proposing a space observatory that would have a primary mirror with a diameter of 100 meters.
The primary mirror can be moved along a circular path around the center of the secondary mirror at an angle [gamma].
(NYSE: NOC) and teammate ATK said they have completed static testing of the primary mirror backplane support structure, moving NASA's James Webb Space Telescope one step closer to its 2018 launch.
One of the most challenging aspects of the project will be to create and install the telescope's 39m-wide primary mirror.
5 ( ANI ): The Giant Magellan Telescope's third primary mirror is going to be unveiled at the University of Arizona's Steward Observatory Mirror Lab on December 6, 2013.
This now puts them in pole position to work in collaboration with potential partners to win or participate in a PS200m contract to produce all of the segments required for the telescope's primary mirror.
ATK's role in the Webb Telescope project is building the 2,000-pound frame that will hold the telescope's 18 sections of primary mirror in place.
Arguably the key component of both SALT and HET is the Spherical Aberration Corrector (SAC) which enables light from the spherical primary mirror to be brought to a sharp focus.
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