0
These are coordinates that define the position of an object in the sky (on the "celestial sphere"). They are used in a similar way to how latitude and longitude are used, on the Earth's surface.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How do you use ascension in a sentence?
Ascension is a noun. We drank hot cocoa to ward off the morning's chill while we awaited the ascension of Venus.
How do astronomers rate the magnitude of a stars?
Many astronomers use a common method known as terenateral. This is when they record the height of the corona on the star and use a unit of measurment known as hypengeroly.
What is a stars location determined by?
Astronomers use the coordinate system of RA right ascension also called hour angle, and Declination (Dec)RA is the celestial equivalent of terrestrial longitude. Both RA and longitude measure an east-west angle along the equator; and both measure from a zero point on the equator. For longitude, the zero point is the Prime Meridian; for RA, the zero point is known as the First Point of Aries, which is the place in the sky where the Sun crosses the celestial equator at the March equinox. RA is always zero on the meridian of the celestial sphere which passes through the celestial poles and first point of Aries. Declination is comparable to latitude, projected onto the celestial sphere, and is measured in degrees north and south of thecelestial equator. Therefore, points north of the celestial equator have positive declinations, while those to the south have negative declinations. * An object on the celestial equator has a dec of 0°. * An object at the celestial north pole has a dec of +90°. * An object at the celestial south pole has a dec of −90°.
Why do astronomers depend on technology?
Back in the older times astronomers didn't have our current instruments, but as time went on technology advanced and made it easier for astronomers to do what they do. But to answer your question astronomers depend on Technology because they want accurate observations and plus like i said earlier it is easier to use technology.
What conclusion do astronomers make based on the red shift?
use your brain to answer it its ok for your answer.
What location does NOT use latitude and longitude?
The sky. Astronomers use right ascension and declination as coordinates for locating stars, rather than latitude and longitude.
What is the direction of the heavenly bodies as seen on earth?
By tradition the direction of an object in the sky needs two coordinates to describe it because the normal description does not include the distance. The position (or direction) can be expressed as azimuth (angle round the horizon) and altitude (angle above the horizon). These depend on time an the position of the observer. Only positive altitude angles are seen in the sky. Astronomers prefer to use right ascension and declination. Declination is the latitude where the star passes overhead, and right ascension expresses how many hours the object crosses the meridian after a standard position called the First Point of Aries. The right ascension and declination are preferred because they don't depend on time or the observer's position on the Earth's surface.
Why don't we use latitude and longitude for celestial coordinates?
We more or less do, we just call them declination and right ascension instead. The two concepts are mathematically equivalent.
Why do astronomers use modern constellation regions?
Constellation are a useful quick way of dividing the sky up into its different regions, so astronomers have continued to use the traditional constellations. Unfortunately, constellation boundaries are made more complicated to define because of precession, which means that some boundaries that used to follow lines of constant right-ascension or declination no longer do so. This means that star atlases have to be redrawn every 50-100 years.
What do astronomers use to plot positions in the sky?
Positions in the sky are measured by angles. The simplest is the altitude, the angle above the horizon, and the azimuth, the direction measured running eastwards from north. There are other systems but always two coordinates are needed to specify a direction. Star positions are measured with a transit-circle, which always faces exactly south, and the stars are timed as they cross the meridian. The altitude gives the star's declination in degrees and the time gives the right-ascension in hours and minutes after a standard direction known as the First Point of Aries has passed.
What are the different ways astronomers use to study stars?
the astronomers use Absolute magnitude
How do you use ascension in a sentence?
Ascension is a noun. We drank hot cocoa to ward off the morning's chill while we awaited the ascension of Venus.
How do astronomers use infrared lights?
Astronomers use infrared light to map the dust in between stars.
What is the right ascension and declination of the star alpha Orionis?
RA 5h 55min, DEC 7 deg 24 in The distance ("a") from Earth to Betelgeuse is about 427 light years and the distance ("b") from Earth to Rigel is about 772 light years. The angle between the two stars from Earth is 18.56 degrees. Knowing these three numbers, we can now use the "law of cosines" to calculate the distance (c) between the stars: c = square root of (a2+ b2- 2ab x cosine of the angle).
Where do astronomers snort coke?
They use the bathroom like anyone else in a house or building. They use the restroom, they are astronomers, not astronauts.
What do astronomers use?
Astronomers can use their eyes to study the stars. They can also use various telescopes that either refract, reflect, and detect exotic formations.
What is an instrument that astronomers use?
telescope
