Development of slewing mirror telescope optical system for the uffo-pathfinder

S. Jeong, J. W. Nam, K. B. Ahn, I. H. Park, S. W. Kim, J. Lee, H. Lim, S. Brandt, C. Budtz-Jørgensen, A. J. Castro-Tirado, P. Chen, M. H. Cho, J. N. Choi, B. Grossan, M. A. Huang, A. Jung, J. E. Kim, M. B. Kim, Y. W. Kim, E. V. LinderK. W. Min, G. W. Na, M. I. Panasyuk, J. Ripa, V. Reglero, G. F. Smoot, J. E. Suh, S. Svertilov, N. Vedenkin, I. Yashin

Research output: Contribution to journalConference articlepeer-review


The Slewing Mirror Telescope (SMT) is the UV/optical telescope of UFFO-pathfinder. The SMT optical system is a Ritchey-Chrétien (RC) telescope of 100 mm diameter pointed by means of a gimbal-mounted flat mirror in front of the telescope. The RC telescope has a 17 × 17arcmin2 in Field of View and 4.3 arcsec resolution (full width half maximum of the point spread function) The beam-steering mirror enables the SMT to access a 35 × 35degree region and point and settle within 1 sec. All mirrors were fabricated to about 0.02 wavelengths RMS in wave front error (WFE) and 84.7% average reflectivity over 200 nm ∼ 650 nm. The RC telescope was aligned to 0.05 wavelengths RMS in WFE (test wavelength 632.8 nm). In this paper, the technical details of the RC telescope and slewing mirror system assembly, integration, and testing are given shortly, and performance tests of the full SMT optical system are reported.

Original languageEnglish
Pages (from-to)561-565
Number of pages5
JournalEAS Publications Series
Publication statusPublished - 2013
Event2012 Gamma-Ray Burst Symposium, GRB 2012 - Malaga, Spain
Duration: 2012 Oct 82012 Oct 12

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Engineering(all)
  • Space and Planetary Science


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