Which method of astronomical measurement is the precise measurement of brightness?
A)spectroscopy
B)photography
C)astrometry
D)photometry
E)interferometry

Question

Quizplus · Accepted Answer

Photometry is the precise measurement of the brightness of celestial objects. It involves the use of specialized cameras or instruments to detect the amount of light emitted by a star or other celestial object. This method is used to study changes in brightness over time, which can provide valuable information about the properties of the object being observed. The other options listed (spectroscopy, photography, astrometry, interferometry) are all different methods of astronomical measurement, but do not specifically measure brightness with the same level of precision as photometry. Photometry is the precise measurement of brightness, usually measured through the use of photometers which measure the amount of light received by a detector. This method is particularly useful for studying the light emitted by stars and galaxies, and allows astronomers to determine the luminosity of an object, which can provide important information about its physical properties.

Which Method of Astronomical Measurement Is the Precise Measurement of Brightness