pipeline.domain.source.Source

class Source(source_id: int | integer, name: str, direction: dict, proper_motion: dict[str, dict], is_eph_obj: bool, table_name: str, avg_spacing: float | str)

Bases: object

A logical representation of an astronomical source.

id

The numerical identifier of the source.

name

The name of the source.

fields

List of Field objects for field(s) associated with the source.

is_eph_obj

Boolean declaring whether this is a moving source (with entry in the ephemeris table).

Methods

Attributes

avg_spacing	Returns the average time spacing (in minutes) between table entries in the ephemeris table or "" if this is not an ephemeris source.
dec	Return declination of the source.
direction	Return source direction as a CASA 'direction' measure dictionary.
ephemeris_table	Returns the name of the ephemeris table associated with this Source or "" if this is not an ephemeris source.
frame	Return reference frame code for the direction to the source.
gb	Return declination of the source.
gl	Return longitude for the source, in DMS format.
intents	Return unique scan intents associated with the source.
latitude	Return latitude of the source.
longitude	Return longitude of the source.
pm_x	Return string representation of longitudinal component of proper motion of the source.
pm_y	Return string representation of latitudinal component of proper motion of the source.
proper_motion	Return string representation of proper motion of the source.
ra	Return right ascension of the source.

__init__(source_id: int | integer, name: str, direction: dict, proper_motion: dict[str, dict], is_eph_obj: bool, table_name: str, avg_spacing: float | str) → None

Initialize a Source object.

Parameters:

• source_id -- The numerical identifier of the source.

• name -- The name of the source.

• direction -- The direction to the source as a CASA 'direction' measure dictionary.

• proper_motion -- The proper motion of the source; provided as a 2-element dictionary with keys "longitude" and "latitude", containing the respective components of the proper motion as CASA quantities (dictionaries).

• is_eph_obj -- Boolean declaring whether this is a moving source (with entry in the ephemeris table).

• table_name -- Base file name of ephemeris table (without extension).

• avg_spacing -- Average time spacing (in minutes) between entries in the ephemeris table.

property avg_spacing: float | str

Returns the average time spacing (in minutes) between table entries in the ephemeris table or "" if this is not an ephemeris source.

property dec: str

Return declination of the source.

property direction: dict

Return source direction as a CASA 'direction' measure dictionary.

property ephemeris_table: str

Returns the name of the ephemeris table associated with this Source or "" if this is not an ephemeris source.

property frame: str

Return reference frame code for the direction to the source.

property gb: str

Return declination of the source.

property gl: str

Return longitude for the source, in DMS format.

property intents: set[str]

Return unique scan intents associated with the source.

property latitude: dict

Return latitude of the source.

property longitude: dict

Return longitude of the source.

property pm_x: str

Return string representation of longitudinal component of proper motion of the source.

property pm_y: str

Return string representation of latitudinal component of proper motion of the source.

property proper_motion: str

Return string representation of proper motion of the source.

property ra: str

Return right ascension of the source.