Seoul National University Camera II (SNUCAM-II): The New SED Camera for the Lee Sang Gak Telescope (LSGT)

TL;DR

The paper introduces SNUCAM-II, a new CCD camera system for the Lee Sang Gak Telescope, featuring high sensitivity, broad wavelength coverage, and multiple filters, enabling diverse astronomical observations and spectral energy distribution studies.

Contribution

This work presents the design, characteristics, and performance of SNUCAM-II, a novel CCD camera system with wide wavelength coverage and multiple filters for the LSGT.

Findings

High sensitivity with QE > 80% over 0.4-0.9 μm

Wide field-of-view of 15.7×15.7 arcmin

Limiting magnitude of g=19.91 AB mag at 5σ in 180 sec

Abstract

We present the characteristics and the performance of the new CCD camera system, SNUCAM-II (Seoul National University CAMera system II) that was installed on the Lee Sang Gak Telescope (LSGT) at the Siding Spring Observatory in 2016. SNUCAM-II consists of a deep depletion chip covering a wide wavelength from 0.3 {\mu}m to 1.1 {\mu}m with high sensitivity (QE at > 80% over 0.4 to 0.9 {\mu}m). It is equipped with the SDSS ugriz filters and 13 medium band width (50 nm) filters, enabling us to study spectral energy distributions (SEDs) of diverse objects from extragalactic sources to solar system objects. On LSGT, SNUCAM-II offers 15.7 {\times} 15.7 arcmin field-of-view (FOV) at a pixel scale of 0.92 arcsec and a limiting magnitude of g = 19.91 AB mag and z=18.20 AB mag at 5{\sigma} with 180 sec exposure time for point source detection.