ESASkyClass

class astroquery.esasky.ESASkyClass

Bases: astroquery.query.BaseQuery

Attributes Summary

DEFAULT_ROW_LIMIT
TIMEOUT
URLbase

Methods Summary

get_images(position[, radius, missions, …])	This method gets the fits files available for the selected position and mission and downloads all maps to the the selected folder.
get_maps(query_table_list[, missions, …])	This method takes the dictionary of missions and metadata as returned by query_region_maps and downloads all maps to the selected folder.
list_catalogs()	Get a list of the mission names of the available catalogs in ESASky
list_maps()	Get a list of the mission names of the available observations in ESASky
query_object_catalogs(position[, catalogs, …])	This method queries a chosen object or coordinate for all available catalogs and returns a TableList with all the found catalogs metadata for the chosen missions and object.
query_object_maps(position[, missions, …])	This method queries a chosen object or coordinate for all available maps which have observation data on the chosen position.
query_region_catalogs(position, radius[, …])	This method queries a chosen region for all available catalogs and returns a TableList with all the found catalogs metadata for the chosen missions and region.
query_region_maps(position, radius[, …])	This method queries a chosen region for all available maps and returns a TableList with all the found maps metadata for the chosen missions and region.

Attributes Documentation

DEFAULT_ROW_LIMIT = 10000

TIMEOUT = 1000

URLbase = 'http://sky.esa.int/esasky-tap'

Methods Documentation

get_images(position, radius='0 arcmin', missions='all', download_dir='Maps', cache=True)

This method gets the fits files available for the selected position and mission and downloads all maps to the the selected folder. The method returns a dictionary which is divided by mission. All mission except Herschel returns a list of HDULists. For Herschel each item in the list is a dictionary where the used filter is the key and the HDUList is the value.

Parameters:

position : str or astropy.coordinates object

Can either be a string of the location, eg ‘M51’, or the coordinates of the object.

radius : str or Quantity, optional

The radius of a region. Defaults to 0.

missions : string or list, optional

Can be either a specific mission or a list of missions (all mission names are found in list_missions()) or ‘all’ to search in all missions. Defaults to ‘all’.

download_dir : string, optional

The folder where all downloaded maps should be stored. Defaults to a folder called ‘Maps’ in the current working directory.

cache : bool, optional

When set to True the method will use a cache located at .astropy/astroquery/cache. Defaults to True.

Returns:

maps : dict

All mission except Herschel returns a list of HDULists. For Herschel each item in the list is a dictionary where the used filter is the key and the HDUList is the value. It is structured in a dictionary like this: dict: { ‘HERSCHEL’: [{‘70’: [HDUList], ‘160’: [HDUList]}, {‘70’: [HDUList], ‘160’: [HDUList]}, …], ‘HST’:[[HDUList], [HDUList], [HDUList], [HDUList], [HDUList], …], ‘XMM-EPIC’ : [[HDUList], [HDUList], [HDUList], [HDUList], …] … }

Examples

get_images(“m101”, “14’”, “all”)

get_maps(query_table_list, missions='all', download_dir='Maps', cache=True)

This method takes the dictionary of missions and metadata as returned by query_region_maps and downloads all maps to the selected folder. The method returns a dictionary which is divided by mission. All mission except Herschel returns a list of HDULists. For Herschel each item in the list is a dictionary where the used filter is the key and the HDUList is the value.

Parameters:

query_table_list : TableList or dict or list of (name, Table) pairs

A TableList or dict or list of name and Table pairs with all the missions wanted and their respective metadata. Usually the return value of query_region_maps.

missions : string or list, optional

Can be either a specific mission or a list of missions (all mission names are found in list_missions()) or ‘all’ to search in all missions. Defaults to ‘all’.

download_dir : string, optional

The folder where all downloaded maps should be stored. Defaults to a folder called ‘Maps’ in the current working directory.

cache : bool, optional

When set to True the method will use a cache located at .astropy/astroquery/cache. Defaults to True.

Returns:

maps : dict

All mission except Herschel returns a list of HDULists. For Herschel each item in the list is a dictionary where the used filter is the key and the HDUList is the value. It is structured in a dictionary like this: dict: { ‘HERSCHEL’: [{‘70’: [HDUList], ‘160’: [HDUList]}, {‘70’: [HDUList], ‘160’: [HDUList]}, …], ‘HST’:[[HDUList], [HDUList], [HDUList], [HDUList], [HDUList], …], ‘XMM-EPIC’ : [[HDUList], [HDUList], [HDUList], [HDUList], …] … }

Examples

get_maps(query_region_catalogs(“m101”, “14’”, “all”))

list_catalogs()

Get a list of the mission names of the available catalogs in ESASky

list_maps()

Get a list of the mission names of the available observations in ESASky

query_object_catalogs(position, catalogs='all', row_limit=10000, get_query_payload=False, cache=True)

This method queries a chosen object or coordinate for all available catalogs and returns a TableList with all the found catalogs metadata for the chosen missions and object. To account for errors in telescope position, the method will look for any sources within a radius of 5 arcsec of the chosen position.

Parameters:

position : str or astropy.coordinates object

Can either be a string of the location, eg ‘M51’, or the coordinates of the object.

catalogs : string or list, optional

Can be either a specific catalog or a list of catalogs (all catalog names are found in list_catalogs()) or ‘all’ to search in all catalogs. Defaults to ‘all’.

row_limit : int, optional

Determines how many rows that will be fetched from the database for each mission. Can be -1 to select maximum (currently 100 000). Defaults to 10000.

get_query_payload : bool, optional

When set to True the method returns the HTTP request parameters. Defaults to False.

cache : bool, optional

When set to True the method will use a cache located at .astropy/astroquery/cache. Defaults to True.

Returns

——-

table_list : TableList

Each mission returns a Table with the metadata of the catalogs available for the chosen mission and object. It is structured in a TableList like this: TableList with 8 tables: ‘0:Gaia DR1 TGA’ with 8 column(s) and 25 row(s) ‘1:HSC’ with 8 column(s) and 75 row(s)

Examples

query_object_catalogs(“m101”, “all”)

query_object_catalogs(“265.05, 69.0”, “Gaia DR1 TGA”) query_object_catalogs(“265.05, 69.0”, [“Gaia DR1 TGA”, “HSC”])

query_object_maps(position, missions='all', get_query_payload=False, cache=True)

This method queries a chosen object or coordinate for all available maps which have observation data on the chosen position. It returns a TableList with all the found maps metadata for the chosen missions and object.

Parameters:

position : str or astropy.coordinates object

Can either be a string of the location, eg ‘M51’, or the coordinates of the object.

missions : string or list, optional

Can be either a specific mission or a list of missions (all mission names are found in list_missions()) or ‘all’ to search in all missions. Defaults to ‘all’.

get_query_payload : bool, optional

When set to True the method returns the HTTP request parameters. Defaults to False.

cache : bool, optional

When set to True the method will use a cache located at .astropy/astroquery/cache. Defaults to True.

Returns:

table_list : TableList

Each mission returns a Table with the metadata and observations available for the chosen missions and object. It is structured in a TableList like this: TableList with 8 tables: ‘0:HERSCHEL’ with 8 column(s) and 25 row(s) ‘1:HST’ with 8 column(s) and 735 row(s)

Examples

query_object_maps(“m101”, “all”)

query_object_maps(“265.05, 69.0”, “Herschel”) query_object_maps(“265.05, 69.0”, [“Herschel”, “HST”])

query_region_catalogs(position, radius, catalogs='all', row_limit=10000, get_query_payload=False, cache=True)

This method queries a chosen region for all available catalogs and returns a TableList with all the found catalogs metadata for the chosen missions and region.

Parameters:

position : str or astropy.coordinates object

Can either be a string of the location, eg ‘M51’, or the coordinates of the object.

radius : str or Quantity

The radius of a region.

catalogs : string or list, optional

Can be either a specific catalog or a list of catalogs (all catalog names are found in list_catalogs()) or ‘all’ to search in all catalogs. Defaults to ‘all’.

row_limit : int, optional

Determines how many rows that will be fetched from the database for each mission. Can be -1 to select maximum (currently 100 000). Defaults to 10000.

get_query_payload : bool, optional

When set to True the method returns the HTTP request parameters. Defaults to False.

cache : bool, optional

When set to True the method will use a cache located at .astropy/astroquery/cache. Defaults to True.

Returns:

table_list : TableList

Each mission returns a Table with the metadata of the catalogs available for the chosen mission and region. It is structured in a TableList like this: TableList with 8 tables: ‘0:Gaia DR1 TGA’ with 8 column(s) and 25 row(s) ‘1:HSC’ with 8 column(s) and 75 row(s)

Examples

query_region_catalogs(“m101”, “14’”, “all”)

import astropy.units as u query_region_catalogs(“265.05, 69.0”, 14*u.arcmin, “Gaia DR1 TGA”) query_region_catalogs(“265.05, 69.0”, 14*u.arcmin, [“Gaia DR1 TGA”, “HSC”])

query_region_maps(position, radius, missions='all', get_query_payload=False, cache=True)

This method queries a chosen region for all available maps and returns a TableList with all the found maps metadata for the chosen missions and region.

Parameters:

position : str or astropy.coordinates object

Can either be a string of the location, eg ‘M51’, or the coordinates of the object.

radius : str or Quantity

The radius of a region.

missions : string or list, optional

Can be either a specific mission or a list of missions (all mission names are found in list_missions()) or ‘all’ to search in all missions. Defaults to ‘all’.

get_query_payload : bool, optional

When set to True the method returns the HTTP request parameters. Defaults to False.

cache : bool, optional

When set to True the method will use a cache located at .astropy/astroquery/cache. Defaults to True.

Returns:

table_list : TableList

Each mission returns a Table with the metadata and observations available for the chosen missions and region. It is structured in a TableList like this: TableList with 8 tables: ‘0:HERSCHEL’ with 8 column(s) and 25 row(s) ‘1:HST’ with 8 column(s) and 735 row(s)

Examples

query_region_maps(“m101”, “14’”, “all”)

import astropy.units as u query_region_maps(“265.05, 69.0”, 14*u.arcmin, “Herschel”) query_region_maps(“265.05, 69.0”, [“Herschel”, “HST”])