Source code for astropy.coordinates.builtin_frames.baseradec

# -*- coding: utf-8 -*-
# Licensed under a 3-clause BSD style license - see LICENSE.rst

from astropy.utils.decorators import format_doc
from astropy.coordinates import representation as r
from astropy.coordinates.baseframe import BaseCoordinateFrame, RepresentationMapping, base_doc

__all__ = ['BaseRADecFrame']


doc_components = """
    ra : `~astropy.coordinates.Angle`, optional, must be keyword
        The RA for this object (``dec`` must also be given and ``representation``
        must be None).
    dec : `~astropy.coordinates.Angle`, optional, must be keyword
        The Declination for this object (``ra`` must also be given and
        ``representation`` must be None).
    distance : `~astropy.units.Quantity`, optional, must be keyword
        The Distance for this object along the line-of-sight.
        (``representation`` must be None).

    pm_ra_cosdec : :class:`~astropy.units.Quantity`, optional, must be keyword
        The proper motion in Right Ascension (including the ``cos(dec)`` factor)
        for this object (``pm_dec`` must also be given).
    pm_dec : :class:`~astropy.units.Quantity`, optional, must be keyword
        The proper motion in Declination for this object (``pm_ra_cosdec`` must
        also be given).
    radial_velocity : :class:`~astropy.units.Quantity`, optional, must be keyword
        The radial velocity of this object.
"""


[docs]@format_doc(base_doc, components=doc_components, footer="") class BaseRADecFrame(BaseCoordinateFrame): """ A base class that defines default representation info for frames that represent longitude and latitude as Right Ascension and Declination following typical "equatorial" conventions. """ frame_specific_representation_info = { r.SphericalRepresentation: [ RepresentationMapping('lon', 'ra'), RepresentationMapping('lat', 'dec') ] } default_representation = r.SphericalRepresentation default_differential = r.SphericalCosLatDifferential