Division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models.- Observational astronomy
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Provided as an overview and topical guide to space science:
Observational astronomy – Observatories on the ground as well as space observatories take measurements of celestial entities and phenomena
Infrared astronomy is a sub-discipline of astronomy which specializes in the observation and analysis of astronomical objects using infrared (IR) radiation.
Natural science that studies celestial objects and phenomena.
In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars.
Telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to collect data through electronic image sensors.
People use optical telescopes (including monoculars and binoculars) for outdoor activities such as observational astronomy, ornithology, pilotage, hunting and reconnaissance, as well as indoor/semi-outdoor activities such as watching performance arts and spectator sports.
Gamma-ray astronomy is the astronomical observation of gamma rays, the most energetic form of electromagnetic radiation, with photon energies above 100 keV.
Use of analytical and computational models based on principles from physics and chemistry to describe and explain astronomical objects and astronomical phenomena.
Theoretical astronomy is built on the work of observational astronomy, astrometry, astrochemistry, and astrophysics.
Italian astronomer, physicist and engineer, sometimes described as a polymath, from the city of Pisa, then part of the Duchy of Florence.
Galileo has been called the "father" of observational astronomy, modern physics, the scientific method, and modern science.
Branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.
In observational astronomy, astrometric techniques help identify stellar objects by their unique motions.
In observational astronomy, a double star or visual double is a pair of stars that appear close to each other as viewed from Earth, especially with the aid of optical telescopes.
Measure of the brightness of a star or other astronomical object observed from Earth.
But in observational astronomy and popular stargazing, unqualified references to "magnitude" are understood to mean apparent magnitude.