e/Advanced CCD Imaging Spectrometer

Information
has gloss	eng: ACIS, the AXAF CCD Imaging Spectrometer, is an instrument built by a team from the Massachusetts Institute of Technology's Center for Space Research and the Pennsylvania State University for the Chandra X-ray Observatory (formerly, AXAF). Because of its ability to accurately measure the energy of single photons, it serves as an X-Ray integral field spectrograph for Chandra.
lexicalization	eng: Advanced CCD Imaging Spectrometer
instance of	c/Spacecraft instruments