add ref to astroquery.cds to get the HiPS name from an expression
@@ -16,10 +16,13 @@ to extract FITS images from HiPS sky maps. HiPS is an IVOA standard that combine
order to produce a progressive hierarchical sky map describing the whole survey. Please refer to the
`IVOA paper <http://www.ivoa.net/documents/HiPS/20170519/REC-HIPS-1.0-20170519.pdf>`_ for more info.
-Given an astropy user-defined WCS with an HiPS name
-(see the list of valid HiPS names hosted in CDS `here <http://aladin.unistra.fr/hips/list>`_),
+Given an astropy user-defined WCS with a HiPS name,
hips2fits will return you the corresponding FITS image (JPG/PNG output formats are also implemented).
+See the list of valid HiPS names hosted in CDS `here <http://aladin.unistra.fr/hips/list>`_. It is also
+possible to use :meth:`astroquery.cds.CdsClass.find_datasets` to retrieve the list of HiPSes matching an expression
+(e.g. \*HST\* will return the names of the HST surveys HiPSes).
+
This package implements two methods:
* :meth:`~astroquery.hips2fits.hips2fitsClass.query_with_wcs` extracting a FITS image from a HiPS and an astropy ``wcs.WCS``.
