The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Transformation of Filter Systems for SQUEAN (SED camera for QUasars in EArly uNiverse)

  • Park, Woojin (School of Space Research, Kyung Hee University) ;
  • Pak, Soojong (School of Space Research, Kyung Hee University) ;
  • Kim, Sanghyuk (School of Space Research, Kyung Hee University) ;
  • Lee, Hye-In (School of Space Research, Kyung Hee University) ;
  • Hyun, Minhee (CEOU, Astronomy Program, Department of Physics & Astronomy, Seoul National University) ;
  • Shim, Hyunjin (Department of Earth Science Education, Kyungpook National University) ;
  • Im, Myungshin (CEOU, Astronomy Program, Department of Physics & Astronomy, Seoul National University)
  • Published : 2015.04.10
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Abstract

We have recently installed SQUEAN on the 82 inch telescope at the McDonald Observatory, USA. This instrument consists of an ANDOR CCD camera, a focal reducer, an electronic box, an auto guiding system and a new filter wheel which holds up to 20 filters. Currently the filter wheel is equipped with Johnson-Cousins BVRI filters, SDSS rizY and isiz filters, and 50nm medium band pass filters (M625(625nm), M675(675nm), M725(725nm), M775(775nm), M825(825nm), M875(875nm), M925s(925nm), M975(975nm), and M1025(1025nm)). Our medium band pass filter system is suitable with SED fitting. Filter transformation methods are essential for time-domain observations including transient objects, e.g., supernovae, variable stars, and solar system bodies. In this work, we develop a series of equations to convert the open clusters photometry data within these filter systems.

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