Items in the Inst TUI menu and other instrument info. Expose window ; each instrument has a window to control exposure sequences. To open the expose window for a given instrument: bring up that instrument's main window, then press the Expose... button along the bottom. ... ARCTIC Imager . Agile High Speed Photometer . DIS Dual Imaging Spectrograph . Echelle spectrograph . ... NICFPS infrared Fabrey-P rot spectrograph and imager . TSpec TripleSpec infrared spectrograph ...