|
|
Celestial coordinate system
In astronomy, a celestial coordinate system is a coordinate system for mapping positions in the sky. There are different celestial coordinate systems each using a coordinate grid projected on the celestial sphere, in analogy to the geographic coordinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle. (The fundamental plane of the geographic system is the Earth's equator). Each coordinate system is named for its choice of fundamental plane; below the name of a pole and the names of the coordinates are also shown:
Converting coordinates
Equatorial to Horizontal coordinatesLet be the declination and the hour angle.
Let be the observer's latitude.
Let be the altitude and the azimuth.
Then the equations of the transformation are:
Use the inverse trigonometric functions to get the values of the coordinates.
This article is licensed under the GNU Free Documentation License at http://www.gnu.org/copyleft/fdl.html
You may copy and modify it as long as the entire work (including additions) remains under this license.
You must provide a link to http://www.gnu.org/copyleft/fdl.html
To view or edit this article at Wikipedia go to http://www.wikipedia.org/wiki/Celestial_coordinate_system
|
©
2005 Music
Entertainment Network. A Cyprus
Roussos Music Entertainment Company. All Rights Reserved.
Articles
from
Wikipedia
Encyclopedia
are licensed under the GNU Free Documentation License. You may copy and
modify it as long as the entire work (including additions) remains under
this license. You must provide a link to http://www.gnu.org/copyleft/fdl.html.
All text is available under the terms of the GNU Free Documentation License.
All trademarks and service marks including Napster,
Rio
MP3 Player, iRock,
Creative
MP3 Player, iRiver,
Apple iPod
Portable
MP3 Players + iTunes,
eMusic,
Guitar
Center Musicians
Friend, Zzounds
Musical Instrument Equipment Store, BMG
Music Service, Columbia
House DVD Club, eBay,
Amazon,
Netflix,
Jamster,
Gamefly,
Friendster,
Music123
Musical Instruments, Billboard,
MTV,
Yahoo
Launch, Overture
Yahoo Search Marketing, MusicMatch,
Kazaa,
Kazaa
Lite, Morpheus
software, Real
Rhapsody, Bose,
Sheet
Music Plus, Billboard
Magazine, Rolling
Stone Magazine, Walmart
Downloads, Barnes
and Noble book store, CDUniverse,
Tower
Records, MSN
Music, MySpace,
Limewire,
WinMX,
Google
Adsense, Alibris,
TicketsNow,
MusicSpace,
uBid
are property of their respective owners. Music.us has no affiliation with
MySpace
or Friendster,
but offers alternative services. Disclaimer: Uploading or downloading
of copyrighted works without permission or authorization of copyright
holders may be illegal and subject to civil or criminal liability and
penalties. Please buy
music and refrain from any illegal downloading activity. User
submitted free content, including Wikipedia encyclopedia or modification
thereof by end users, do not reflect the views and opinions of Music.us
and are for educational and research development purposes. Our website
offers advanced search for bands and artists bio and albums and browse
options for artist band biographies resources and information. We offer
blogs and community building tools for authors, bands and users. The Music.us
Entertainment Network is web's most comprehensive one-stop shopping, community
networking and education site. Find song lyrics, guitar tablature, posters,
ring tones, free MP3 downloads and hourly updating news feeds on musicians
and any genre style including rock,
pop,
hip
hop, country,
christian,
rap,
classical,
folk,
dance,
latin,
R
and B, blues,
punk,
heavy
metal, alternative,
guitar,
bass,
drums,
gospel,
wedding,
arabic,
jazz,
soundtrack,
world,
reggae,
soul
and more. Privacy Policy
- Site Map
- MP3 - Music Downloads
- Song Lyrics
| |
