Development of motorized slewing mirror stage for the UFFO project

J. Nam, K. B. Ahn, M. Cho, S. Jeong, J. E. Kim, S. Ahmad, P. Barrillon, S. Brandt, C. Budtz-Jørgensen, A. J. Castro-Tirado, C. H. Chang, C. Y. Chang, Y. Y. Chang, C. R. Chen, P. Chen, H. S. Choi, Y. J. Choi, P. Connel, S. Dagoret-Campagne, C. EylesB. Grossan, J. J. Huang, M. H.A.Huang Huang, A. Jung, M. B. Kim, S. W. Kim, Y. W. Kim, A. S. Krasnov, J. Lee, H. Lim, E. V. Linder, T. C. Liu, N. Lund, K. W. Min, G. W. Na, M. I. Panasyuk, I. H. Park, V. Reglero, J. Ripa, J. M. Rodrigo, G. F. Smoot, J. E. Suh, S. Svertilov, N. Vedenkin, M. Z. Wang, I. Yashin

Research output: Contribution to journalConference articlepeer-review


The Ultra-Fast Flash Observatory (UFFO) is a space observatory for optical follow-ups of gamma ray bursts (GRBs), aiming to explore the first 60 seconds of GRBs optical emission. UFFO is utilized to catch early optical emissions from GRBs within few sec after trigger using a Gimbal mirror which redirects the optical path rather than slewing entire spacecraft. We have developed a 15 cm two-axis Gimbal mirror stage for the UFFO-Pathfinder which is going to be on board the Lomonosov satellite which is to be launched in 2013. The stage is designed for fast and accurate motion with given budgets of 3 kg of mass and 3 Watt of power. By employing stepping motors, the slewing mirror can rotate faster than 15 deg/sec so that objects in the UFFO coverage (60 deg × 60 deg) can be targeted in ∼1 sec. The obtained targeting resolution is better 2 arcmin using a close-loop control with high precision rotary encoder. In this presentation, we will discuss details of design, manufacturing, space qualification tests, as well as performance tests.

Original languageEnglish
Pages (from-to)573-577
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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