Coordinate Frames: Difference between revisions

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{|
{|
|'''J2000''' ||
    |'''J2000   '''|| -- mean equator and equinox at J2000.0 (FK5)
|-
|-
|'''JMEAN''' ||
    |'''JNAT    '''|| -- geocentric natural frame
|-
|-
|'''JTRUE''' ||
    |'''JMEAN    '''|| -- mean equator and equinox at frame epoch
|-
|-
|'''B1950''' ||
    |'''JTRUE    '''|| -- true equator and equinox at frame epoch
|-
|-
|'''B1950_VLA''' ||
    |'''APP      '''|| -- apparent geocentric position
|-
|-
|'''BMEAN''' ||
    |'''B1950    '''|| -- mean epoch and ecliptic at B1950.0. The epoch is taken from the frame epoch; or from the aipsrc variable measures.b1950.d_epoch; or has default 2000.0
|- 
  |'''B1950_VLA'''|| -- mean epoch(1979.9)) and ecliptic at B1950.0
|-
|-
|'''BTRUE''' ||
    |'''BMEAN    '''|| -- mean equator and equinox at frame epoch
|-
|-
|'''GALACTIC''' ||
    |'''BTRUE    '''|| -- true equator and equinox at frame epoch
|-
|-
|'''HADEC''' ||
    |'''GALACTIC '''|| -- galactic coordinates
|-
|-
|'''AZEL''' ||
    |'''HADEC    '''|| -- topocentric HA and declination
|-  
|'''AZELSW''' ||
|-  
|'''AZELNE''' ||
|-
|-
|'''AZELGEO''' ||
    |'''AZEL    '''|| -- topocentric Azimuth and Elevation (N through E)
|-
|-
|'''AZELSWGEO''' ||
    |'''AZELSW  '''|| -- topocentric Azimuth and Elevation (S through W)
|-
|-
|'''AZELNEGEO''' ||  
    |'''AZELNE  '''|| -- topocentric Azimuth and Elevation (N through E)
|-
|-
|'''ECLIPTIC''' ||
    |'''AZELGEO  '''|| -- geodetic Azimuth and Elevation (N through E)
|-
|-
|'''MECLIPTIC''' ||
    |'''AZELSWGEO'''|| -- geodetic Azimuth and Elevation (S through W)
|-
|-
|'''TECLIPTIC''' ||
    |'''AZELNEGEO'''|| -- geodetic Azimuth and Elevation (N through E)
|-
|-
|'''SUPERGAL''' ||
    |'''ECLIPTC  '''|| -- ecliptic for J2000 equator and equinox
|-
|-
|'''APP''' ||
    |'''MECLIPTIC'''|| -- ecliptic for mean equator of date
|-
|-
|'''JNAT''' ||
    |'''TECLIPTIC'''|| -- ecliptic for true equator of date
|-
|-
|'''ITRF''' ||
    |'''SUPERGAL '''|| -- supergalactic coordinates
|-
|-
|'''TOPO''' ||
    |'''ITRF    '''|| -- coordinates wrt ITRF Earth frame
|-
|-
|'''ICRS''' |
    |'''TOPO    '''|| -- apparent topocentric position
|-
    |'''ICRS     '''|| -- International Celestial reference system
|}
|}




Latest revision as of 18:42, 1 November 2010

Coordinate Frames

J2000 -- mean equator and equinox at J2000.0 (FK5)
JNAT -- geocentric natural frame
JMEAN -- mean equator and equinox at frame epoch
JTRUE -- true equator and equinox at frame epoch
APP -- apparent geocentric position
B1950 -- mean epoch and ecliptic at B1950.0. The epoch is taken from the frame epoch; or from the aipsrc variable measures.b1950.d_epoch; or has default 2000.0
B1950_VLA -- mean epoch(1979.9)) and ecliptic at B1950.0
BMEAN -- mean equator and equinox at frame epoch
BTRUE -- true equator and equinox at frame epoch
GALACTIC -- galactic coordinates
HADEC -- topocentric HA and declination
AZEL -- topocentric Azimuth and Elevation (N through E)
AZELSW -- topocentric Azimuth and Elevation (S through W)
AZELNE -- topocentric Azimuth and Elevation (N through E)
AZELGEO -- geodetic Azimuth and Elevation (N through E)
AZELSWGEO -- geodetic Azimuth and Elevation (S through W)
AZELNEGEO -- geodetic Azimuth and Elevation (N through E)
ECLIPTC -- ecliptic for J2000 equator and equinox
MECLIPTIC -- ecliptic for mean equator of date
TECLIPTIC -- ecliptic for true equator of date
SUPERGAL -- supergalactic coordinates
ITRF -- coordinates wrt ITRF Earth frame
TOPO -- apparent topocentric position
ICRS -- International Celestial reference system


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