Imrpove dosctring
@@ -1419,6 +1419,11 @@ class HpxGeom(Geom):
def to_wcs_tiles(self, nside_tiles=4, margin="0 deg"):
"""Create WCS tiles geometries from HPX geometry with given nside.
+ The HEALPix geom is divide into superpixels defined by nside_tiles,
+ which are then represented by a WCS geometry using a tangential
+ projection. The number of WCS tiles is given by the number of pixels
+ for the given nside_tiles.
+
Parameters
----------
nside_tiles : int
