The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Wide-Field Imaging Telescope-0(WIT0): A New Wide-Field 0.25 m Telescope at McDonald Observatory

  • Lee, Sang-Yun (Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Dept. of Physics & Astronomy, Seoul National University) ;
  • Im, Myungshin (Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Dept. of Physics & Astronomy, Seoul National University) ;
  • Pak, Soojong (School of Space Research, Kyung Hee University) ;
  • Ji, Tae-Geun (School of Space Research, Kyung Hee University) ;
  • Lee, Hye-In (School of Space Research, Kyung Hee University) ;
  • Hwang, Seong Yong (Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Dept. of Physics & Astronomy, Seoul National University) ;
  • Marshall, Jennifer (Dep. Of Physics & Astronomy, Texas A&M University) ;
  • Prochaska, Travis (Dep. Of Physics & Astronomy, Texas A&M University) ;
  • Gibson, Coyne A. (McDonald Observatory)
  • Published : 2017.04.10
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Abstract

A small wide-field imaging telescope is a powerful instrument to survey the Universe: wide-field image can monitor the variability of many sources at a time, e.g. young stellar objects and active galactic nuclei, and it can be an effective way to locate transient sources without precise positional information such as gravitational wave sources or some gamma-ray bursts. In February 2017, we installed a 0.25 m f/3.6 telescope on the McDonald 0.8 m telescope as a piggyback system. With a $4k{\times}4k$ CCD camera, the telescope has a $2.35{\times}2.35deg$ field-of-view. Currently, it is equipped with Johnson UBVRI filters and 3 narrow-band filters: $H{\alpha}$, OIII and SII. We will present the installation process, and the telescope performance such as detection limit and image quality based on the data from commissioning observations. We will also discuss possible scientific projects with this system.

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