primary mirror
Britishnoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The primary mirror, M1, is the largest mirror ever made for an optical telescope.
From BBC ● Aug. 19, 2024
By combining the four VLT 8.2-metre telescopes at ESO's Paranal Observatory, they can resolve details as if astronomers would employ a telescope with a primary mirror of 200 metres in diameter.
From Science Daily ● Jan. 8, 2024
By blocking much of the starlight, we transformed the primary mirror into an array of small collectors, allowing Keck to work much like modern radio telescopes that link many smaller antennas together.
From Scientific American ● Aug. 18, 2023
Last fall, the 8-meter-diameter primary mirror of the Gemini North telescope, on Mauna Kea in Hawaii, was nicked on its outer edge while being moved for cleaning and recoating.
From New York Times ● Apr. 18, 2023
A different type of telescope uses a concave primary mirror as its main optical element.
From Textbooks ● Oct. 13, 2016
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
