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First light (astronomy)

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First use of a telescope
This article is about the testing of telescopes. For the first light of dawn, seeTwilight § Nautical twilight. For the cosmogonical age, seefirst light (cosmology). For the Mashpee Wampanoag people, known as the 'people of the First Light', seeMashpee Wampanoag Tribe.
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First light image from the Kepler space telescope with two points of interest outlined. Celestial north is toward the lower left corner.[1]
First light image from theKepler space telescope with two points of interest outlined.Celestial north is toward the lower left corner.[1]

Inastronomy,first light is the first practical use of a new instrument, typically atelescope to take anastronomical image after it has been constructed. This is often not the first viewing using the telescope because optical tests have likely been performed to adjust the components.

First released image from theVera C. Rubin Observatory, theTrifid andLagoon nebulae,[2] released on 23 June 2025.[3]

See also

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References

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  1. ^Atkinson, Nancy (16 April 2009)."Kepler's "First Light" Images".Universe Today. Retrieved2012-10-13.
  2. ^Chang, Kenneth; Miller, Katrina (23 June 2025)."Vera Rubin Scientists Reveal Telescope's First Images".The New York Times.ISSN 0362-4331. Retrieved23 June 2025.
  3. ^Wells, Ione; Rannard, Georgina (23 June 2025)."First celestial image unveiled from revolutionary telescope".BBC.Archived from the original on 23 June 2025. Retrieved24 June 2025.
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