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An equatorial platform or equatorial table is an equatorial telescope mount in the form of a specially designed platform that allows any device sitting on it to track astronomical objects in the sky on an equatorial axis. [1] They are used to give equatorial tracking to any device sitting on them, from small cameras up to entire observatory ...
Equatorial (red) and horizontal (blue) celestial coordinates. A star 's spherical coordinates are often expressed as a pair, right ascension and declination , without a distance coordinate. The direction of sufficiently distant objects is the same for all observers, and it is convenient to specify this direction with the same coordinates for all.
On equatorial aspect it shows a hemisphere except for poles. 1943 Armadillo: Other Compromise Erwin Raisz: 1982 GS50: Other Conformal John P. Snyder: Designed specifically to minimize distortion when used to display all 50 U.S. states. 1941 Wagner VII = Hammer-Wagner: Pseudoazimuthal Equal-area K. H. Wagner 1946 Chamberlin trimetric projection ...
the tropics, the Earth's equatorial region; tropical climate; the Celestial equator. equatorial orbit; equatorial coordinate system; ... Toggle the table of contents.
The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) use an equatorial radius of 6,378.1366 km (3,963.1903 mi) (codified as the IAU 2009 value). [6] This equatorial radius is also in the 2003 and 2010 IERS Conventions. [7] It is also the equatorial radius used for the IERS 2003 ellipsoid.
The table shows both for the WGS84 ellipsoid with a = 6 378 137.0 m and b = 6 356 752.3142 m. The distance between two points 1 degree apart on the same circle of latitude, measured along that circle of latitude, is slightly more than the shortest ( geodesic ) distance between those points (unless on the equator, where these are equal); the ...
A large German equatorial mount on the Forststernwarte Jena 50cm Cassegrain reflector telescope. An equatorial mount is a mount for instruments that compensates for Earth's rotation by having one rotational axis, called polar axis, parallel to the Earth's axis of rotation. [1] [2] This type of mount is used for astronomical telescopes and cameras.
Geodetic latitude and geocentric latitude have different definitions. Geodetic latitude is defined as the angle between the equatorial plane and the surface normal at a point on the ellipsoid, whereas geocentric latitude is defined as the angle between the equatorial plane and a radial line connecting the centre of the ellipsoid to a point on the surface (see figure).