Seoul NAtional University 4K x 4K Camera (SNUCAM) for Maidanak Observatory

Computer Science – Performance

Scientific paper

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Instrumentation: Ccd Camera

Scientific paper

We present the characteristics of the Seoul National University 4k Camera (SNUCAM) and report its performance on the 1.5m telescope at the Maidanak observatory in Uzbekistan. SNUCAM is a CCD camera with a pixel scale of 0.266 arcsec ~in 4096 × 4096 format, covering 18.1 arcmin × 18.1 arcmin~ field of view on the 1.5m. The camera is currently equipped with Bessell UBVRI, Hα, SDSS ugriz, and Y-band filters, allowing us to carry out a variety of scientific programs ranging from exoplanet studies to survey of quasars at high redshift. We examine properties of SNUCAM such as the bias level and its temporal variation, the dark current, the readout noise, the gain,
the linearity, the fringe patterns, the amplifier bias, and the bad pixels. From our observations, we also constructed the master fringe frames in I-, z-, and Y-band. We outline some of the current scientific programs being carried out with SNUCAM, and demonstrate that SNUCAM on the 1.5m can deliver excellent images that reach to the 5-σ detection limits of R ˜ 25.5 mag and z ˜ 22.7 mag in 1 hour total integration.

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