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Angular resolution — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Angular_resolution
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T19:48:36.580Z
SHA-256 of the archived text: 87999097513f5cb9f88df09a6a7e71fa9d32feddbae23bd0821ebc721b6ecd07
Stable URL of this page: https://metraipolis.com/documento/dc_e08055ed803b

How to cite

Angular resolution — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Angular_resolution (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_e08055ed803b (Metraipolis archive dc_e08055ed803b, sha256 87999097513f5cb9f88df09a6a7e71fa9d32feddbae23bd0821ebc721b6ecd07)

BibTeX

@misc{dce08055ed803b,
  title = {Angular resolution — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Angular_resolution},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_e08055ed803b; sha256 87999097513f5cb9f88df09a6a7e71fa9d32feddbae23bd0821ebc721b6ecd07},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Angular_resolution. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Angular resolution describes the ability of any image-forming device such as an optical or radio telescope, a microscope, a camera, or an eye, to distinguish small details of an object, thereby making it a major determinant of image resolution. It is used in optics applied to light waves, in antenna theory applied to radio waves, and in acoustics applied to sound waves. The colloquial use of the term "resolution" sometimes causes confusion; when an optical system is said to have a high resolution or high angular resolution, it means that the perceived distance, or actual angular distance, between resolved neighboring objects is small. The value that quantifies this property, θ, which is given by the Rayleigh criterion, is low for a system with a high resolution. The closely related term spatial resolution refers to the precision of a measurement with respect to space, which is directly connected to angular resolution in imaging instruments. The Rayleigh criterion shows that the minimum angular spread that can be resolved by an image-forming system is limited by diffraction to the ratio of the wavelength of the waves to the aperture width. For this reason, high-resolution imaging systems such as astronomical telescopes, long distance telephoto camera lenses and radio telescopes have large apertures.

Tema degli esploratori: fisica e astronomia (deposito sistematico; ricerca «optics»).
Fonte: Wikipedia in inglese, voce «Angular resolution» — https://en.wikipedia.org/wiki/Angular_resolution
Wikidata Q740898 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q740898
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Angular_resolution?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1378345248, consultata il 2026-10-07T19:12:53.949Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: bc47a34a8c9cab0ddf0569d42a28a828c487618e83cc2529202788f768e5f945