Spectral information in CASA - ESO
Spectral information in CASA - ESO
Spectral information in CASA - ESO
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The <strong>Spectral</strong> reference frames available <strong>in</strong> <strong>CASA</strong><br />
Frequencies <strong>in</strong>ternally stored as a <strong>CASA</strong> Measure<br />
= ( Value, Unit, Reference Frame )<br />
Available <strong>Spectral</strong> Reference Frames <strong>in</strong> <strong>CASA</strong> 4.0:<br />
Code <strong>CASA</strong> Name FITS SPECSYS Description<br />
0 REST SOURCE Laboratory<br />
1 LSRK LSRK local standard of rest (k<strong>in</strong>ematic)<br />
2 LSRD LSRD local standard of rest (dynamic)<br />
3 BARY BARYCENT barycentric<br />
4 GEO GEOCENTR geocentric<br />
5 TOPO TOPOCENT topocentric (default for ALMA data)<br />
6 GALACTO GALACTOC galactocentric<br />
7 LGROUP LOCALGRP Local Group<br />
8 CMB CMBDIPOL cosmic microwave background dipole<br />
(cf. table C.2 of the <strong>CASA</strong> cookbook)<br />
D. Petry, <strong>Spectral</strong> <strong><strong>in</strong>formation</strong> <strong>in</strong> <strong>CASA</strong>, February 2013<br />
5
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