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You are here: NRAO Public Wiki>ALMA Web>TWikiUsers>ToddHunter>CasaExtensions>GetEphemeris (2015-08-21, ToddHunter)
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getEphemeris
Return to directory of Todd's CASA extensions Reads the ASDM_EPHEMERIS table from a measurement set. See also casaEphemeris.Usage:
au.getEphemeris(vis, ephemerisId=-1, useASDM_Ephemeris=False, verbose=True)Inputs:
- use_ASDM_EPHEMERIS: if True then use the ASDM_EPHEMERIS table if False, then search the FIELD subdirectory for files of the name format: EPHEMx_fieldname_MJDsec.tab.
- ephemerisId: if specified, then limit the return values to the specified ephemeris ID
- MJD seconds, RA_radian, Dec_radian
Example:
CASA <17>: mjd, ra, dec = au.getEphemeris('uid___A002_X90989d_X117c.ms')
Ephemeris 0 begins 21.550733 minutes before observation begins.
and it is 1476.000000 minutes long
CASA <22>: mjd[0]
Out[22]: 4920435120.0
CASA <23>: ra[0]
Out[23]: 2.1594308554000001
CASA <24>: dec[0]
Out[24]: 0.1100817508
-- ToddHunter - 2015-01-08 Edit | Attach | Print version | History: r3 < r2 < r1 | Backlinks | View wiki text | Edit wiki text | More topic actions
Topic revision: r3 - 2015-08-21, ToddHunter
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