Does anyone know if the data used by astronomer Harold Craft in his iconic visualisation of pulsar radio waves - better known from the Joy Division album cover - is openly available?  Or a similar dataset?  Been searching but no luck..

http://blogs.scientificamerican.com/sa-visual/pop-culture-pulsar-origin-story-of-joy-division-8217-s-unknown-pleasures-album-cover-video/
