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This package defines units used in the CDS format, both the units
defined in `Centre de Données astronomiques de Strasbourg
`_ `Standards for Astronomical Catalogues 2.0
`_ format and the `complete
set of supported units `_.
This format is used by VOTable up to version 1.2.
These units are not available in the top-level `astropy.units`
namespace. To use these units, you must import the `astropy.units.cds`
module::
>>> from astropy.units import cds
>>> q = 10. * cds.lyr # doctest: +SKIP
To include them in `~astropy.units.UnitBase.compose` and the results of
`~astropy.units.UnitBase.find_equivalent_units`, do::
>>> from astropy.units import cds
>>> cds.enable() # doctest: +SKIP
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atmosphereu AUu auu astronomical unitu baru barnu bitu byteu Cu Coulombu speed of lightu pu calgbٽ@u calorieu cdu candelau ctu countu Du Debye (dipole)u
Julian dayu degu °u degreeu dynu dyneu eu electron chargeu mu eps0u electric constantu ergu eVu
electron voltu Fu Faradu Gu Gravitation constantu gu gramu gaussu Gaussu geoMassu Mgeou
Earth massu Hu Henryu hu houru hru \hu Planck constantu Hzu Hertzu inchg
F%u?u Ju Jouleu JDu Mu jovMassu Mjupu Jupiter massu Jyu Janskyu Ku Kelvinu ku Boltzmannu lu litreu lmu lumenu Lsunu solLumu solar luminosityu lxu luxu meteru magu magnitudeu meu
electron massu minu minuteu MJDu mmHgg%iP`@u millimeter of mercuryu molu moleu mpu proton massu Msunu solMassu
solar massu mu0u µ0u magnetic constantu muBu
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Enable CDS units so they appear in results of
`~astropy.units.UnitBase.find_equivalent_units` and
`~astropy.units.UnitBase.compose`. This will disable
all of the "default" `astropy.units` units, since there
are some namespace clashes between the two.
This may be used with the ``with`` statement to enable CDS
units only temporarily.
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