We introduce the Lee Sang Gak Telescope (LSGT), a remotely operated, robotic 0.43-meter telescope. The telescope was installed at the Siding Spring Observatory, Australia, in 2014 October, to secure regular and exclusive access to the dark sky and excellent atmospheric conditions in the southern hemisphere from the Seoul National University (SNU) campus. Here, we describe the LSGT system and its performance, present example images from early observations, and discuss a future plan to upgrade the system. The use of the telescope includes (i) long-term monitoring observations of nearby galaxies, active galactic nuclei, and supernovae; (ii) rapid follow-up observations of transients such as gamma-ray bursts and gravitational wave sources; and (iii) observations for educational activities at SNU. Based on observations performed so far, we nd that the telescope is capable of providing images to a depth of R = 21:5 mag (point source detection) at 5- with 15 min total integration time under good observing conditions.

Abstract
1. INTRODUCTION
2. SYSTEM
3. OPERATION AND DATA REDUCTION
4. PERFORMANCE
    4.1. SXVR-H36
    4.2. SBIG ST-10XME and Limiting Magnitude
    4.3. Optical Performance and Tracking Accuracy
5. SCIENCE PROGRAMS AND CURRENT USAGE
6. FUTURE UPGRADES
7. SUMMARY
REFERENCES

• Kihyun Kim(Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Changsu Choi(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Myungshin Im(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University/Korea Institute for Advanced Study) Corresponding author