Camera for Quasars in Early Universe

  • Park, Won-Kee (Korea Astronomy and Space Science Institute) ;
  • Pak, Soojong (School of Space Research, Kyung Hee University) ;
  • Im, Myungshin (CEOU/Department of Physics and Astronomy, Seoul National University) ;
  • Choi, Changsu (CEOU/Department of Physics and Astronomy, Seoul National University) ;
  • Jeon, Yiseul (CEOU/Department of Physics and Astronomy, Seoul National University) ;
  • Chang, Seunghyuk (Samsung Electronics) ;
  • Jeong, Hyeonju (School of Space Research, Kyung Hee University) ;
  • Lim, Juhee (School of Space Research, Kyung Hee University) ;
  • Kim, Eunbin (School of Space Research, Kyung Hee University) ;
  • Choi, Nahyun (School of Space Research, Kyung Hee University) ;
  • Lee, Hye-In (School of Space Research, Kyung Hee University) ;
  • Kim, Sanghyuk (School of Space Research, Kyung Hee University) ;
  • Jeong, Byeongjoon (School of Space Research, Kyung Hee University) ;
  • Ji, Taegeun (School of Space Research, Kyung Hee University)
  • 발행 : 2013.10.08

초록

Camera for QUasars in EArly uNiverse (CQUEAN) is an optical CCD camera system made by Center for Exploration of the Origin of the Universe (CEOU). CQUEAN is developed for follow-up observation of red sources such as high-redshift quasar candidates ($z{\geq}5$), gamma-ray bursts (GRB), brown dwarfs and young stellar objects. The CQUEAN is composed of a science camera with deep-depletion CCD chip which is sensitive at around $1{\mu}m$, a set of custom-made wide-band filters for detection of quasar candidates at z~5, and a guide camera. A focal reducer was developed to secure $4.8^{\prime}{\times}4.8^{\prime}$ field of view, and an in-house user software for efficient data acquisition. CQUEAN was attached to 2.1m Otto Struve Telescope in McDonald Observatory, USA, in August 2010. About 1000 quasar candidates including 3 confirmed with follow-up spectroscopy, have been observed so far, and many high-z galaxy cluster candidates, GRBs and supernovae were also observed. And monitoring of HBC 722, a young stellar object, is under way since 2011. Further enhancement of CQUEAN including the introduction of narrow-band filters is planned.

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