Coordinate Framess

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CASA supported time coordinate frames are listed in Table C.6.

Table C.6: Coordinate frames in CASA

Name	Description

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.
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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