primary mirror


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primary mirror

n
(Astronomy) the mirror that collects and focuses the incoming light in a reflecting telescope
References in periodicals archive ?
Caption: In the workshop, the author's Foucault test of the primary mirror shows no sign of "print through" from the supporting rib structure.
26, "when the telescope reaches the L2 it will use near-infrared camera (NIRCam) instrument to help align its primary mirror segments about 40 days after launch, once they have unfolded from their unaligned stowed position and cooled to their operating temperatures.
The primary mirror for the National Science Foundation (NSF) Daniel K.
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.
The twofold improvement over past efforts rests on the fact that for the first time, a telescope with a large diameter primary mirror is being used for digital photography at its theoretical resolution limit in visible wavelengths - light that the human eye can see.
MARYLAND (CyHAN)- The Center of Curvature Optical Assembly, or COCOA is a piece of equipment that will measure the accuracy of NASA's James Webb Space Telescope's primary mirror, to ensure the mirrors are perfectly shaped and will work in the frosty environment of space.
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.
NASA, Northrop Grumman The first flight mirror segment for NASA's James Webb Space Telescope's (JWST) primary mirror has completed its final polishing process, the first of 18 segments that comprise the Observatory's 21 ft.
The Keck Telescopes are the world's largest optical telescopes, with the primary mirror of each of the 25-meter-tall telescopes measuring 10m in dia.
GALEX's telescope, featuring a primary mirror only 0.

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