The FIMS (Far-ultraviolet IMaging Spectrograph; also known as SPEAR, Spectroscopy of Plasma Evolution from Astrophysical Radiation) is the primary payload of the STSAT-1, the first Korean science satellite, which was launched in September, 2003. The FIMS performs spectral imaging of diffuse far-ultraviolet emission with the unprecedented wide field of view and the relatively good spectral resolution. We present far-ultraviolet spectral observations of highly ionized interstellar medium including supernova remnants, superbubbles, soft X-ray shadows, and the molecular hydrogen fluorescent emission lines. The FIMS has detected He II, C III, 0 III, O IV, Si IV, O VI, and H2 fluorescent emission lines. The emission lines arise in shocked or thermally heated and in photo-ionized gases. We present an overview of the FIMS instrument and its initial observational results.

• KWANG-IL SEON(Korea Astronomy and Space Science Institute)
• WONYONG HAN(Korea Astronomy and Space Science Institute)
• DAE-HEE LEE(Korea Astronomy and Space Science Institute)
• UK-WON NAM(Korea Astronomy and Space Science Institute)
• JANG-HYUN PARK(Korea Astronomy and Space Science Institute)
• IN-SOO YUK(Korea Astronomy and Space Science Institute)
• HO JIN(Korea Astronomy and Space Science Institute)
• KYUNG WOOK MIN(Korea Advanced Institute of Science and Technology)
• KWANG-SUN RYU(Korea Advanced Institute of Science and Technology)
• JERRY EDELSTEIN(Space Sciences Laboratory, University of California)
• ERIC KORPELA(Space Sciences Laboratory, University of California)