This is the lightcurve of a star being occulted by Pluto in June as observed by the @SOFIAtelescope: it was just shown at a TweetUp at Ames (snatched here from a webcast of a briefing); I discussed this curve already in http://skyweek.wordpress.com/2011/09/20/live-blog-von-der-ag-tagung-in-heidelberg [16:45 MESZ].