Optical performances of Slewing Mirror Telescope for UFFO-Pathfinder

S. Jeong, K. B. Ahn, J. W. Nam, I. H. Park, S. W. Kim, H. S. Choi, Y. J. Choi, B. Grossan, I. Hermann, A. Jung, Y. W. Kim, J. E. Kim, E. V. Linder, J. Lee, H. Lim, K. W. Min, G. W. Na, K. H. Nam, M. I. Panasyuk, G. F. SmootS. Svertilov, Y. D. Suh, N. Vedenkin, I. Yashin, M. H. Zhao

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)


The Ultra-Fast Flash Observatory-Pathfinder (UFFO-P) is to be launched onboard Lomonosov spacecraft in November 2011. It is to measure early UV/Optical photons from Gamma Ray Bursts (GRBs). Slewing Mirror Telescope (SMT) is one of two instruments designed for detection of UV/Optical images of the GRBs. SMT is a Ritchey-Chrétien telescope of 100 mm in diameter with a motorized slewing mirror at the entrance providing 17×17 arcmin2 in Field of View (FOV) and 4 arcsec in pixel resolution. Its sky coverage can be further expanded up to 35 degrees in FOV by tilting a motorized slewing mirror. All mirrors were fabricated to about RMS 0.02 waves in wave front error (WFE) and 84.7% (in average reflectivity) over 200nm~650nm range. SMT was aligned to RMS 0.05 waves in WFE (test wavelength 632.8nm). From the static gravity test result, SMT optics system is expected to survive during launch. The technical details of SMT assembly and laboratory performance test results are reported.

Original languageEnglish
Number of pages4
Publication statusPublished - 2011
Event32nd International Cosmic Ray Conference, ICRC 2011 - Beijing, China
Duration: 2011 Aug 112011 Aug 18


Other32nd International Cosmic Ray Conference, ICRC 2011

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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