Performance Measurement of SMT(Slewing Mirror Telescope) Optical System

  • Ahn, Ki-Beom ;
  • Jeong, Soo-Min ;
  • Kim, Ji-Eun ;
  • Kim, Sug-Whan ;
  • Lee, Jik ;
  • Lim, Heui-Jin ;
  • Lindere, V. ;
  • Nam, Ji-Woo ;
  • Nam, Koo-Hyun ;
  • Park, Il-H. ;
  • Smoot, G.F.
  • Published : 2011.04.15


The SMT is a subsystem of the UFFO (Ultra-Fast Flash Observatory) pathfinder onboard the Lomonosov spacecraft planed to be launched in November 2011. The UFFO is designed for extremely fast observation of optical afterglow of Gamma Ray Burst (GRB). This study is primarily concerned with performance measurement of the SMT optical system under the integration and test phase. SMT is a 100mm Ritchey-Chretien type telescope with a motorized slewing mirror and a $256{\times}256$ pixels Intensified Charge-Coupled Device (ICCD) of 22.2${\mu}m$ in pixel size. SMT is designed to operate over the wavelength coverage between 200 nm and 650 nm. It has 17 arcmin FOV (Field of View), providing 4arcsec in detector pixel resolution. In this study, we describe the integration and test process of the SMT optical system and interim performance measurement results with motorized slewing mirror and ICCD.