sigma_fov¶

mrspoc.
sigma_fov
(Gmag)[source] [edit on github]¶ Approximate Gaia astrometric uncertainty in a single measurement, i.e. “the alongscan accuracy per field of view crossing”, after Perryman et al. 2014, Eqn. 1  3.
Parameters: Gmag : float or
ndarray
Gaia G band magnitude.
Returns: sigma :
Quantity
Approximate astrometric uncertainty for a target of magnitude
Gmag
, in units of arcseconds.