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astroquery.cds

Matthieu Baumann, July 2, 2018

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Generals

  • astroquery module called cds
    • responsible for querying the MOCServer at http://alaskybis.unistra.fr/MocServer/quer
      • return datasets (on a base of ~20000 total datasets) having sources in a specific region :
        • a cone : astropy skycoord and angle
        • a polygon : list of astropy skycoords
        • a MOC : mocpy object, url, path to a local FITS file
      • filter datasets on its meta data (e.g. some properties like the sky coverage %, the title of the dataset, its bib ref...)
  • A link to the PR for integrating cds module into astroquery:

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Features :

  • Query the MOCServer through only one method:
    • astroquery.cds.query_region
  • Can specify 3 types of region : a cone, a polygon, a MOC
  • Get specific data from the MOCServer :
    • ID list of datasets
    • dataset metadatas
    • number of matching dataset
    • Union/Intersection of all the dataset MOCs
  • Can query services (TAP, CS, SIA when available) on them (thanks to PyVO).

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Demo

https://mybinder.org/v2/gh/cds-astro/astroquery/notebook_use_case