Robotic telescope for rapid gamma-ray burst follow-up observations

R. Sato, N. Kawai, M. Suzuki, Y. Yatsu, J. Kataoka

研究成果: Conference article


We have developed a robotic telescope at Tokyo Institute of Technology (Tokyo Tech) to perform rapid follow-up observations of early optical afterglows of gamma-ray bursts (GRBs). Our system was primarily designed to respond quickly to the GRB locations notified by the High Energy Transient Explorer 2 (HETE-2) satellite, but it can also respond to all the notifications provided by the GRB Coordinates Network (GCN). In order to cover the error circle of the HETE-2, wide-field and thermo-electrically cooled CCD camera is equipped on the focus of a small 30cm telescope. A field of view of our system is 44 arcminutes which can cover the most error circles of the HETE-2. The rapid response (less than 15 sec after the notice) and slew speeds (6 deg / sec) make our system appropriate for observing GRB afterglows. Using this convenient system, we detected the optical afterglow of GRB 030329. Observation was started 67 minutes after the burst, which was one of the earliest detection in the world. We report the performance of our telescope coupled to CCD camera, and estimate the limiting magnitude of our system. Although our system is located in a region affected by strong city lights, the limiting magnitude is approximately 17.3 mag.

ジャーナルProceedings of SPIE - The International Society for Optical Engineering
発行部数PART 2
出版物ステータスPublished - 2004 12 24
イベントGround-based Instrumentation for Astronomy - Glasgow, United Kingdom
継続期間: 2004 6 212004 6 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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