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
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
With a primary mirror 21 feet wide, the Webb is seven times as powerful as its predecessor, the Hubble Space Telescope.
From New York Times • Dec. 27, 2022
We had to wait a few months while its epic 6.5m primary mirror was unpacked and focused, and its other systems tested and calibrated.
From BBC • Dec. 24, 2022
Telescopes are also limited by diffraction, because of the finite diameter D of their primary mirror.
From Textbooks • Aug. 12, 2015
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