KEPLER MISSION PARTICIPATING SCIENTISTS PROGRAM (PSP) was announced as part of Research Opportunities in Space and Earth Sciences (ROSES) - 2007 (February). PSP proposals were accepted until the deadline date, 18 May 2007. The announcement was at the NSPIRES web page (NASA Research Opportunities — Complete ROSES 2007 - Summary of Solicitation and Appendices A through E; Kepler Mission PSP in section D.10.)