IMAPS
Interstellar Medium Absorption Profile Spectrograph
The Interstellar Medium Absorption Profile Spectrograph (IMAPS) is an objective-grating, echelle spectrograph built to observe the spectra of bright, hot stars over the spectral region 950-1150Ǻ (typical coverage).  IMAPS has a high wavelength resolving power, making it especially well suited for studies of interstellar absorption lines.