CEA Service d'Astrophysique (CEA SAp)
is the astrophysics division of CEA
(Commissariat à l'énergie atomique et aux énergies alternatives),
a French national institution of atomic and other
scientific research.
CEA SAp has made contributions to many international astronomy efforts,
among them, development of the ISOCAM camera on Infrared Space Observatory (ISO),
the CIRS instrument for the Cassini mission,
and instruments for Herschel Space Observatory,
as well as contributions to the development of MIRIM
(the MIRI imager) on JWST.