Photometers
Photometers are instruments used to measure the intensity of light. In the context of space and astronautical engineering, photometers are used to measure the intensity of light emitted by stars, galaxies, and other celestial objects. They are used to study the properties of these objects, such as their temperature, composition, and distance from Earth. Photometers can be ground-based or space-based, and they can operate at different wavelengths of light, from ultraviolet to infrared. They are often used in conjunction with other instruments, such as spectrographs and telescopes, to obtain a more complete picture of the object being studied.
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