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ISSN : 1225-1534(Print)
ISSN : 2287-6936(Online)
Publications of the Korean Astronomical Society Vol.31 No.3 pp.35-41
DOI : http://dx.doi.org/10.5303/PKAS.2016.31.3.035

CROSSTALK CORRECTION OF THE KMTNet MOSAIC CCD IMAGE

SEUNG-LEE KIM, SANG-MOK CHA, CHUNG-UK LEE, DONG-JIN KIM, BYEONG-GON PARK, YONGSEOK LEE, HONG SOO PARK, JAEMANN KYEONG, MOO-YOUNG CHUN
Korea Astronomy and Space Science Institute/Korea University of Science and Technology
Korea Astronomy and Space Science Institute/School of Space Research, Kyung Hee University
Korea Astronomy and Space Science Institute/Korea University of Science and Technology
Korea Astronomy and Space Science Institute
Korea Astronomy and Space Science Institute/Korea University of Science and Technology
Korea Astronomy and Space Science Institute/School of Space Research, Kyung Hee University
Korea Astronomy and Space Science Institute/Korea University of Science and Technology
Korea Astronomy and Space Science Institute
Korea Astronomy and Space Science Institute

Abstract

We have constructed a wide-field photometric survey system called as the Korea Microlensing Telescope Network (KMTNet) in 2015. It consists of three 1.6 m optical telescopes equipped with mosaic CCD cameras. Four 9k CCDs were installed on the focal plane of each telescope. In this paper, we present the crosstalk analysis of the KMTNet mosaic CCD images. The crosstalk victims caused by bright sources were visible at eight sub-images obtained through different readout ports of each CCD. The crosstalk coefficients were estimated to be several tens of 10-4 in maximum, differing from sub-image to sub-image, and the non-linearity effect certainly appeared at the victims made from saturated sources. We developed software functions to correct the crosstalk effect of the KMTNet CCD images. The software functions showed satisfying results to remove clearly most of the crosstalk victims and have been implemented in the KMTNet image processing pipeline since 2015 September.

초록

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Table

  1. Journal Abbreviation : PKAS
    Frequency : Three times a year
    Doi Prefix : 10.5303/PKAS.
    Year of Launching : 1984
    Publisher : The Korean Astronomical Society
    Indexed/Tracked/Covered By :

  2. Online Submission

    http://submission.kas.org/

  3. The Korean
    Astronomical Society
    (KAS)

  4. Editorial Office
    Contact Information

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