getRADecForField
Return to directory of Todd's CASA extensions
Returns the [[RA],[Dec]] in radians for the specified field in the specified ms.
If run in casa >= 4.2.0, it will (by default) use ms.getfielddirmeas(), instead of reading the
DELAY_DIR field of the ms directly. This will return the correct RA, Dec position for
ephemeris targets when there is an ephemeris attached (as the DELAY_DIR will
remain 0,0 in this case).
See also
getRADecStringForField.
Usage:
au.getRADecForField(ms, myfieldId, usemstool=True, forcePositiveRA=False, verbose=False, blendByName=True)
Inputs:
- field: ID or name
- usemstool: if True, use ms.getfielddirmeas; otherwise use tb.getcell from FIELD table
- blendByName: if True, convert field IDs to name, and then back to ID, which will increase the number of fields, e.g. for mosaics
Examples:
CASA <3>: au.getRADecForField('uid___A002_X6a8ffb_X25c.ms',1)
Out[3]:
array([[-1.48842406],
[-0.24148085]])
CASA <2>: au.getRADecForField('uid___A002_X6a8ffb_X25c.ms',1,forcePositiveRA=True)
Out[2]:
array([[ 4.79476125],
[-0.24148085]])
--
ToddHunter - 2013-09-27