Celestial Observation

케플러의 법칙

Kepler’s law

Kepler and Tycho Brahe There is an astronomer who must be mentioned before talking about Kepler (Johannes Kepler 1571 ~ 1630). That’s Tycho Brahe. Tycho Brahe (1546-1601) is a famous Danish astronomer.…
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Horizontal Coordinate System

Horizontal Coordinate System

Celestial coordinate system A celestial sphere is an abstract sphere centered on an observer. All objects in the sky can be conceived as being projected upon the inner surface of the celestial…
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Equator Coordinate System

Equatorial Coordinate System

Celestial coordinate system A celestial sphere is an abstract sphere centered on an observer. All objects in the sky can be conceived as being projected upon the inner surface of the celestial…
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Celestial Equator and the Ecliptic

Celestial Equator and the Ecliptic

The tilt relationship of the celestial sphere and ecliptic The celestial equator is the enlargement of the earth’s equator to the celestial sphere. Therefore, the celestial equator can be represented by a…
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천체들의 일주 운동 Diurnal Motion

Diurnal Motion

Diurnal Motion Fix the camera towards the Polaris at night. When you shoot for a few hours in that state, you can see the stars move in a circle around the Polaris.…
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Diurnal Motion (WebGL)

Diurnal Motion Fix the camera towards the Polaris at night. When you shoot for a few hours in that state, you can see the stars move in a circle around the Polaris.…
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태양의 일주운동 Diurnal Motion of Sun

Diurnal Motion of Sun

Diurnal Motion is the changing view of the sky seen as the Earth rotates on its axis. What is the change in the movement of the sun during one year? What changes…
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뉴턴 반사 망원경 Newtonian Reflector

Newtonian Reflector

Articulated telescope Telescopes that use only the refraction of a lens are called articulated telescopes. Depending on the lens combination, there are two types of Galileo and Kepler. Galileo is often called…
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케플러식 굴절 망원경 Keplerian Telescope

Keplerian Telescope

Articulated telescope Telescopes that use only the refraction of a lens are called articulated telescopes. Depending on the lens combination, there are two types of Galileo and Kepler. Galileo is often called…
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갈릴레오식 굴절 망원경 Galilean Telescope

Galilean Telescope

Articulated telescope Telescopes that use only the refraction of a lens are called articulated telescopes. Depending on the lens combination, there are two types of Galileo and Kepler. Galileo is often called…
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