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================================== Accessing Online Astronomical Data

Astroquery is an astropy <https://www.astropy.org>_ affiliated package that contains a collection of tools to access online Astronomical data. Each web service has its own sub-package. For example, to interface with the SIMBAD website <https://simbad.cds.unistra.fr/simbad/>_, use the simbad sub-package:

.. code-block:: python

>>> from astroquery.simbad import Simbad
>>> theta1c = Simbad.query_object('tet01 Ori C')
>>> theta1c.pprint()
   MAIN_ID          RA           DEC      ... COO_QUAL COO_WAVELENGTH     COO_BIBCODE
------------- ------------- ------------- ... -------- -------------- -------------------
* tet01 Ori C 05 35 16.4637 -05 23 22.848 ...        A              O 2007A&A...474..653V

Installation and Requirements

Astroquery works with Python 3.7 or later. As an astropy_ affiliate, astroquery requires astropy_ version 4.2.1 or later.

astroquery uses the requests <https://requests.readthedocs.io/en/latest/>_ module to communicate with the internet. BeautifulSoup <https://www.crummy.com/software/BeautifulSoup/>_ and html5lib' <https://html5lib.readthedocs.io/en/latest/>_ are needed for HTML parsing for some services. The keyring <https://pypi.python.org/pypi/keyring>_ module is also required for accessing services that require a login. These can all be installed using pip <https://pypi.python.org/pypi/pip>_ or anaconda <https://www.anaconda.com/>. Running the tests requires curl <https://curl.haxx.se/> to be installed.

The latest version of astroquery can be pip installed (note the --pre for picking up released developer versions, and -U for upgrade):

.. code-block:: bash

$ python -m pip install -U --pre astroquery

To install all the mandatory and optional dependencies add the [all] identifier to the pip command above (or use [docs] or [test] for the dependencies required to build the documentation or run the tests):

.. code-block:: bash

$ python -m pip install -U --pre astroquery[all]

To install the 'bleeding edge' version:

.. code-block:: bash

$ python -m pip install git+https://github.com/astropy/astroquery.git

or cloned and installed from source:

.. code-block:: bash

$ # If you have a github account:
$ git clone [email protected]:astropy/astroquery.git
$ # If you do not:
$ git clone https://github.com/astropy/astroquery.git
$ cd astroquery
$ python -m pip install .

Using astroquery

Importing astroquery on its own doesn't get you much: you need to import each sub-module specifically. See the documentation for a list of Available Services <https://astroquery.readthedocs.io/en/latest/#available-services>. The API shows the standard suite of tools common to most modules, e.g. query_object and query_region.

To report bugs and request features, please use the issue tracker. Code contributions are very welcome, though we encourage you to follow the API_ and contributing guidelines <https://github.com/astropy/astroquery/blob/main/CONTRIBUTING.rst>_ as much as possible.

Citing Astroquery

If you use astroquery, please cite the paper we published in The Astronomical Journal <https://adsabs.harvard.edu/abs/2019AJ....157...98G>__.

The BibTeX entry is available from the package itself::

import astroquery astroquery.citation

In addition you may also want to refer to specific versions of the package. We create a separate Zenodo DOI for each version, they can be looked up at the following Zenodo page <https://doi.org/10.5281/zenodo.591669>__

Additional Links

Download Development ZIP_ | Download Development TAR_

Maintained by Adam Ginsburg_ and Brigitta Sipocz <https://github.com/bsipocz>_ ([email protected]_)

.. _Download Development ZIP: https://github.com/astropy/astroquery/zipball/main .. _Download Development TAR: https://github.com/astropy/astroquery/tarball/main .. _Download Stable ZIP: https://github.com/astropy/astroquery/zipball/stable .. _Download Stable TAR: https://github.com/astropy/astroquery/tarball/stable .. _View on Github: https://github.com/astropy/astroquery/ .. _Documentation: https://astroquery.readthedocs.io .. [email protected]: mailto:[email protected] .. _Adam Ginsburg: https://www.adamgginsburg.com .. _Blog: http://astropy.org/astroquery-blog .. _API: https://astroquery.readthedocs.io/en/latest/api.html