StarID.query_catalogue¶
giant.stellar_opnav.star_identification
:
This method queries stars from the catalogue within the field of view.
The stars are queried such that any stars within 1.3*the
CameraModel.field_of_view
value radial distance of the camera frame z axis converted to right ascension and declination are returned betweenmin_magnitude
andmax_magnitude
. The queried stars are updated to theepoch
value using proper motion. They are stored in thequeried_catalogue_star_records
attribute. The stars are stored as a pandas DataFrame. For more information about this format see theCatalogue
class documentation.The epoch input should either be a python datetime object representation of the UTC time or a float value of the MJD years.
In general, this method does not need to be directly called by the user as it is automatically called in the
project_stars()
method.- Parameters:
epoch (datetime | Real) – The new epoch to move the stars to using proper motion