Definitions

1. The celestial pole is now quite close to the pole star Polaris, but it will not be so in the future, and wasn't in the past.
2. Now North celestial pole is located beside the North Star (Polaris, a Ursa Minor) and the Earth has passed the half of this way.
3. If the celestial pole is the user's local pole, as it usually will be, the user's local latitude will be the elevation of the central axis above the horizon. (Web site)
4. The North Celestial Pole is the point in the northern hemisphere around which all stars appear to rotate.
5. The north celestial pole is visible from Mexico, but the south celestial pole is not. (Web site)

Ursa Minor

1. Placed in the sky by Zeus, Ursa Minor and Ursa Major follow each other endlessly around the north celestial pole. (Web site)

Southern Celestial Pole

1. This point is +90° if you are watching the North Celestial Pole or −90° if you are observing the Southern Celestial Pole. (Web site)
2. The star, as it progresses West, drifts NORTH (Up) in the field of view, AWAY from the Southern Celestial Pole.

South Celestial Pole

1. Star closest to the south celestial pole (see celestial sphere), in effect the southern equivalent of Polaris, although far less conspicuous.
2. Well that circle is either the North or South Celestial pole. (Web site)
3. The sky around the south celestial pole was unknown to ancient Chinese.

Northern

1. The top two stars in the Northern Cross, Sadr and Deneb, point to the north celestial pole of Mars.

Degree

1. Polaris is presently some 44' (about three quarters of a degree) from the Northern Celestial Pole itself. (Web site)
2. At the present time in Earth's 26,000 year precession cycle, a bright star happens to be very close, less than a degree, from the north celestial pole.

Style

1. A sundial can be rotated around its style (which must remain pointed at the celestial pole) to adjust to the local time zone. (Web site)

Location

1. It is notable mainly as the location of the south celestial pole. (Web site)

Center

1. In 2006 Polaris was 42' from the north celestial pole, and so does not lie exactly at the center of the concentric circular star trails.

Night

1. If you were to go outside on a clear night you would observe the stars spinning around the celestial pole. (Web site)

Figure

1. Figure 1 demonstrates four major times of the year which I call the "Cardinal Points" of the celestial pole.

Future

1. Right now, the north celestial pole points towards Polaris, the Northern Star, but this has not always been the case, and it will change in the future.
2. Past and future The path of the north celestial pole amongst the stars due to the effect of precession, with dates shown. (Web site)

Long Periods

1. Celestial pole offset and polar motion are observed offsets from the mathematical formulae and are not predictable over long periods of time. (Web site)

Position

1. Now I shall consider a position of North Celestial pole in the Upper point.
2. The south celestial pole currently lacks a bright star like Polaris to mark its position. (Web site)

Equal

1. As you can see from this example, the distance from the northern horizon to the celestial pole is always equal to your latitude.
2. The angular distance from the northern horizon to the North Celestial Pole is always equal to your latitude.

Stationary

1. Once the axis points toward the celestial pole, it will appear to be stationary and won't experience any more frictional forces. (Web site)

Altitude

1. The altitude of the north celestial pole, which is approximately that of the star Polaris, is equal to the observer's latitude. (Web site)

Telescope

1. The original English fork design has the disadvantage of not allowing the telescope to point too near the north or south celestial pole.
2. Polar alignment - The telescope must be aligned with either the north celestial pole or the south celestial pole. (Web site)

Angle

1. But angle one Axis -- the one located in the valley of the U -- toward the celestial pole and voilà, you have an equatorial mount.

Zenith

1. A way of finding the time of day, for example, is to construct a triangle whose vertices are the zenith, the north celestial pole, and the sun's position. (Web site)

Polar

1. The angle through the celestial pole, between these two positions, is double the polar distance.

Rotation

1. Figure 4: The sky makes one rotation around the North Celestial Pole each night.

Mount

1. Once the finder is aligned with the hinges of the mount, you can proceed to align the mount with the celestial pole. (Web site)

Mounting

1. The mounting is a special design of equatorial mount called a yoke mount, which permits the telescope to be pointed at and near the north celestial pole.

Direction

1. The rotation axis taken as the direction of the celestial pole.
2. The local meridian is the plane containing the direction to the zenith and the direction to the celestial pole.
3. South: one of the cardinal points of the compass, it is the direction opposite north, in the direction of the south celestial pole. (Web site)

Azimuth

1. In Figure 4, the person in Ann Arbor always sees the North Celestial Pole at the same fixed spot in the sky; it has constant altitude and azimuth.

Points

1. Equatorial axis -- Among the two mutually perpendicular axes of a telescope, the one that points at the celestial pole. (Web site)
2. However, the bright Southern Cross (Crux) points towards the south celestial pole. (Web site)

North Celestial Pole

1. The projection of Earth's geographic poles upon the celestial sphere creates a north celestial pole and a south celestial pole. (Web site)
2. It will point closest to Polaris in AD 2017. In 12,000 years the north celestial pole will point about 5 from Vega. (Web site)
3. If you naively assumed Polaris marked the north celestial pole, your determination of latitude could have been off by up to 360 kilometers.

Degrees

1. Some of these adjustments have two degrees of freedom, such as in altitude and azimuth when aligning on the celestial pole. (Web site)
2. Kappa Velorum is only a couple of degrees from the south celestial pole of Mars, so it could therefore be considered the current south star of Mars.
3. This point is 5 or 6 degrees from the south celestial pole. (Web site)

Celestial Equator

1. The declination of the celestial equator is 0�; the declination of the north celestial pole is +90�, and the declination of the south celestial pole is -90�. (Web site)
2. In this case it is simpler using the celestial pole and the celestial equator as reference lines. (Web site)
3. It ranges between -90 degrees at the southern celestial pole and +90 degrees at the northern celestial pole and is zero at the celestial equator. (Web site)

Constellation

1. This constellation lies less that 20 degrees from the south celestial pole and is therefore invisible from most northern latitudes.
2. The constellation of Cepheus lies near the north celestial pole. (Web site)

Northern Hemisphere

1. Moving toward the North Celestial Pole, the point around which the stars in the northern hemisphere appear to rotate, these circles become smaller.
2. For those in the northern hemisphere, finding the celestial pole is not too difficult.
3. In the Northern Hemisphere, we're fortunate to have a naked-eye star marking the position of our Celestial Pole. (Web site)

Draco

1. This very northern constellation goes half way around the celestial pole and the constellation of Ursa Minor, which is partly visible here above of Draco.
2. Draco is near the northern celestial pole; the tail of Draco is between the Big Dipper and the Little Dipper. (Web site)

Pole Star

1. Finding the south celestial pole See also: Pole star. (Web site)
2. It represents the direction to the celestial pole (or the pole star, very nearly) from Kaunakakai. (Web site)

Long Exposure

1. Note that the stars near the celestial pole make less of a trail with the long exposure. (Web site)
2. Long exposure of stars appearing to circle the North Celestial pole. (Web site)

Earth

1. The altitude of the celestial pole in an observer's hemisphere is equal to the observer's latitude on the earth. (Web site)

Quite Close

1. All three members of the family may be found in the northern sky; Cepheus and Cassiopeia are quite close to the northern celestial pole. (Web site)

Star

1. I believe it's safe to say at this point, that the star always stays the same 'distance' from the South Celestial Pole throughout the night.
2. Even if this is done, by computer control, the image rotates at a rate that varies depending on the angle of the star from the celestial pole. (Web site)
3. The star, visible to the naked eye, that is closest to the south celestial pole is the dim Sigma Octantis. (Web site)

Close

1. Called Sigma Octantis, it's located just as close to the south celestial pole as Polaris is to the north and shines at magnitude 5.5.
2. The star Polaris is very close to the North celestial pole.
3. The only star that comes close is Sigma Octans, which is 1 degree away from the South Celestial Pole. (Web site)

North Pole

1. Just as the North Pole of the Earth is stationary while the Earth turns, the north celestial pole also appears to be stationary. (Web site)
2. Stand on the North Pole, latitude 90° N, and overhead will be the north celestial pole, declination +90°. (Web site)
3. The south celestial pole precesses too, always remaining exactly opposite the north pole. (Web site)

Equator

1. Imagine a line on the celestial sphere, from the celestial pole to where the Sun is, and you continue it until it hits the equator. (Web site)
2. For any observer, the angle between the north celestial pole and the terrestrial horizon equals and varies directly with latitude north of the equator. (Web site)
3. Ptolemy projects them from the south celestial pole onto the plane of the equator.

Point

1. The style should be parallel to the Earth's axis of rotation, and point to the celestial pole.
2. The earth's axis, continued indefinitely upwards, meets the sphere in a point called the Celestial Pole. (Web site)
3. Point the crosshairs of the finder at the celestial pole. (Web site)

Pointing

1. This mount is still pointing too far East of the celestial pole, but it is PERFECTLY aligned North and South. (Web site)
2. AziMuth is MAD! Your mount may pointing too far east or West of the Celestial Pole. (Web site)

North Star

1. Right now, the north celestial pole points towards Polaris, the North Star, but it used to point to Vega, and in 14,000 years it aim at Vega again. (Web site)
2. Thus, while today the star Polaris lies approximately at the north celestial pole, this will change over time, and other stars will become the "north star".
3. The North Star is current Polaris (right ascension, declination) since it is closest to the north celestial pole. (Web site)

Sky

1. The blue line represents the path the star takes around the sky, with the Celestial Pole at the center. (Web site)
2. Polaris is 1° from the north celestial pole, and it remains in the same location in the sky all year, making it a useful navigation tool. (Web site)
3. The tilt of the Earth's axis causes the celestial pole above our planetary pole to describe a great circle in the sky over long periods of time. (Web site)

Circling

1. In the northern sky, Cassiopeia sits, forever circling the celestial pole. (Web site)

Circle

1. As the Earth rotates, the stars appear to circle the celestial pole. (Web site)
2. As an added punishment, Cassiopeia was condemned to circle the celestial pole for ever, sometimes hanging upside down in undignified posture.
3. Were the position of the latter invariable, the celestial pole would move round it in a circle. (Web site)

Categories

1. Universe > Stars > Constellations > Polaris
2. Travel > Exploration > Navigation > Pole Star
3. Science > Astronomy > Telescopes > Equatorial Mount
4. Polar Axis
5. Circumpolar

Related Keywords

* Celestial Sphere * Circumpolar * Declination * Equatorial Mount * Horizon * Latitude * North * Polaris * Polar Axis * Pole

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