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.
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
It was a very capable facility, but with a primary mirror just 85cm in diameter, it could never have achieved the kind of detail we now see with Webb's 6.5m primary mirror.
From BBC • Jul. 12, 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
Gold-plated and about as wide as a full-grown African elephant, the telescope’s infrared-tuned primary mirror allows it to probe the atmospheres of exoplanets to a degree never before possible.
From Scientific American • Jan. 23, 2023
Telescopes are also limited by diffraction, because of the finite diameter D of their primary mirror.
From Textbooks • Aug. 12, 2015
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.
