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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.
What is the angular resolution of the Arecibo telescope shown in Figure \(\PageIndex{4}\) when operated at 21-cm wavelength? How does it compare to the resolution of the Hubble Telescope? Answer \(8.4 \times 10^{-4} \,rad\), 3000 times broader than the Hubble Telescope
Optical resolution describes the ability of an imaging system to resolve detail, in the object that is being imaged. An imaging system may have many individual components, including one or more lenses, and/or recording and display components.
PAGE HIGHLIGHTS. • Rayleigh, Dawes' and diffraction resolution limit • Sparrow limit. • Telescopic stellar brightness and limiting resolution • Dark line resolution • Extended detail resolution. Resolution is another vital telescope function. Simply put, telescope resolution limit determines how small a detail can be resolved in the image it forms.
Angles. Angle θ is the ratio of two lengths: R: physical distance between observer and objects [km] S: physical distance along the arc between 2 objects. Lengths are measured in same “units” (e.g., kilometers) θ is “dimensionless” (no units), and measured in “radians” or “degrees”.
Angular resolution directly influences how well telescopes can distinguish between closely spaced celestial objects. The higher the angular resolution, the clearer and more detailed the images produced by the telescope.
In graph drawing, the angular resolution of a drawing of a graph is the sharpest angle formed by any two edges that meet at a common vertex of the drawing. Properties. Relation to vertex degree.
