Equisolid angmap

Hugin fairly easily can make equisolid projections from a set of images covering the sky/ground. At first glance these look like angmaps however they are not quite the same. http://hugin.sourceforge.net/docs/manual/Projections.html

Is there a way to convert from equisolid to angmap, or to use one of the other Hugin projections to build either sky maps or angmaps ?