get_VLA_calibrators

Radio_Astronomy.vla_cal.get_VLA_calibrators(url='http://www.vla.nrao.edu/astro/calib/manual/csource.html')

Create a dictionary keyed on J-names of calibrators in the VLA data base.

Entries in the VLA database are separated by spaces. This is a typical entry:

0001+192   J2000  A 00h01m08.621563s  19d14'33.801860"  Aug01  JVAS
2358+189   B1950  A 23h58m34.865400s  18d57'51.753000"
-----------------------------------------------------
BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
=====================================================
0.7cm    Q  W W W W       0.18

These data are converted to this format:
cals['0001+192'] = {'bname': '2358+189', 'dec': 19.24272273888889,
                    'mm7': 0.17999999999999999, 'ra': 0.019061545277777779}

:param url : URL of the VLA calibrator source list

Returns

dictionary of dictionaries