Angular resolution refers to the ability of an imaging system, like a telescope or microscope, to distinguish between two closely spaced objects. It is determined by the system's aperture size and the wavelength of light being used, with larger apertures and shorter wavelengths providing better resolution.

Angular Resolution

Angular resolution

imaging system

A telescope is an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses or mirrors or both that gathers visible light, allowing for detailed observation of celestial bodies. It plays a crucial role in astronomy, enabling the study of planets, stars, and galaxies far beyond the capabilities of the naked eye.

telescope

A microscope is an optical instrument that magnifies small objects or details of larger objects, allowing for detailed observation and analysis that is not possible with the naked eye. It is crucial in fields like biology, materials science, and nanotechnology for studying structures at micro and nano scales.

microscope

closely spaced objects

Aperture size in photography and optics refers to the opening in a lens through which light passes to enter the camera, directly affecting the exposure and depth of field in an image. A larger aperture allows more light to reach the sensor, resulting in a brighter image and a shallower depth of field, while a smaller aperture allows less light, resulting in a darker image and a greater depth of field.

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