The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Real-Time Reduction Software for Slitless Spectral Image

  • Ji, Tae-Geun (School of Space Research, Kyung Hee University) ;
  • Pak, Soojong (School of Space Research, Kyung Hee University) ;
  • Shin, Suhyun (Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Dept. of Physics & Astronomy, Seoul National University) ;
  • Byeon, Seoyeon (Dept. of Astronomy & Space Science, Kyung Hee University) ;
  • Im, Myungshin (Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Dept. of Physics & Astronomy, Seoul National University)
  • Published : 2019.04.10
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Abstract

For slitless spectroscopy, we have installed the Volume Phase Holographic (VPH) gratings in the filter wheel of the SQUEAN on the 2.1m telescope at McDonald Observatory in Texas, United States. This system can effectively take spectra and monitor the variabilities of many sources, such as quasi-stellar objects, supernovae, and active galactic nuclei. On the single image frame, there are many spectra of the point sources. Therefore, a target extraction needs to trace along the tilted dispersion and to minimize the confusions by other sources. We present a real-time reduction software that has the functions with spectra extraction and wavelength calibration.

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