equatorial sky area Comparison Table

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equatorial sky area comparison table

Subject has coordinate has dimension has definition is part of has historical origin has component has name origin has synonym has boundary is a kind of has genitive is an instance of has purpose

asterism a group of bright stars which form a conspicuous pattern on the celestial sphere constellation equatorial sky area to easily recognize a part of the sky

Baade's Window A clearing in the dust clouds of the constellation Sagittarius where astronomers can view stars in the Galactic bulge. Baade's window lies four degrees south of the Galactic center, so an observer's line of sight passes within 1800 light-years of the Milky Way's center. celestial sphere equatorial sky area

celestial sphere 3 An imaginary sphere of arbitrary radius upon which celestial bodies may be considered to be located. As circumstances require, the celestial sphere may be centered at the observer, at the Earth's center or at any other location. sphere

circumpolar region whose equatorial latitude is greater than the Earth latitude of the observer minus 90 degrees a region defined by an equatorial latitude above which stars are visible all year (depends on observers location on Earth) celestial sphere equatorial sky area to define a part of the sky which can be observed all year at the observers location

constellation Precisely defined area of the celestial sphere, associated with a grouping of stars, that the International Astronomical Union has designated as a constellation. celestial sphere asterism with pictorial or mythical significance asterism defined in equatorial coordinates equatorial sky area which is used when referring to a star in the constellation to divide the celestial sphere into small visually recognizable star classification regions

Zodiac A band about 8° wide on the celestial sphere, centered on the ecliptic. celestial sphere Contains twelve constellations which represent a calendar of the Sun's apparent progress across the celestial sphere. Naked eye planets are found along much the same path (the ecliptic) and caused these constellations to become a focus for astrology. ecliptic region equatorial sky area to facilitate planetary observations as most objects in solar orbit are found in this region

Zone of Avoidance An irregular zone near the plane of the Milky Way where the absorption due to interstellar dust is so great that no external galaxies can be seen through it. celestial sphere galaxies appear to "avoid" the Milky Way equatorial sky area

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Subject	has coordinate	has dimension	has definition	is part of	has historical origin	has component	has name origin	has synonym	has boundary	is a kind of	has genitive	is an instance of	has purpose
asterism			a group of bright stars which form a conspicuous pattern on the celestial sphere	constellation								equatorial sky area	to easily recognize a part of the sky
Baade's Window			A clearing in the dust clouds of the constellation Sagittarius where astronomers can view stars in the Galactic bulge. Baade's window lies four degrees south of the Galactic center, so an observer's line of sight passes within 1800 light-years of the Milky Way's center.	celestial sphere								equatorial sky area
celestial sphere		3	An imaginary sphere of arbitrary radius upon which celestial bodies may be considered to be located. As circumstances require, the celestial sphere may be centered at the observer, at the Earth's center or at any other location.									sphere
circumpolar region	whose equatorial latitude is greater than the Earth latitude of the observer minus 90 degrees		a region defined by an equatorial latitude above which stars are visible all year (depends on observers location on Earth)	celestial sphere								equatorial sky area	to define a part of the sky which can be observed all year at the observers location
constellation			Precisely defined area of the celestial sphere, associated with a grouping of stars, that the International Astronomical Union has designated as a constellation.	celestial sphere	asterism with pictorial or mythical significance	asterism			defined in equatorial coordinates	equatorial sky area	which is used when referring to a star in the constellation		to divide the celestial sphere into small visually recognizable star classification regions
Zodiac			A band about 8° wide on the celestial sphere, centered on the ecliptic.	celestial sphere	Contains twelve constellations which represent a calendar of the Sun's apparent progress across the celestial sphere. Naked eye planets are found along much the same path (the ecliptic) and caused these constellations to become a focus for astrology.			ecliptic region				equatorial sky area	to facilitate planetary observations as most objects in solar orbit are found in this region
Zone of Avoidance			An irregular zone near the plane of the Milky Way where the absorption due to interstellar dust is so great that no external galaxies can be seen through it.	celestial sphere			galaxies appear to "avoid" the Milky Way					equatorial sky area