Coordinate Frames
CASA supported spatial coordinate frames:
| 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 |