As a governmentally approved domestic entity for Space Situational Awareness, Korea Astronomy and Space Science Institute (KASI) is developing and operating an optical telescopes system, Optical Wide-field PatroL (OWL) Network. During the test phase of this system, it is necessary to determine the range of brightness of the observable satellites. We have defined standard magnitude for Low Earth Orbit (LEO) satellites to calibrate their luminosity in terms of standard parameters such as distance, phase angle, and angular rate. In this work, we report the optical brightness range of five LEO Satellites using OWL-Net.

1. INTRODUCTION
 2. METHODLOGY
  2.1 Instrumental Magnitude
  2.2 Exposure Time Normalization
  2.3 Range Normalization
  2.4 Phase Angle Normalizstion
  2.5 Airmadd Correction
 3. RESULS
 4. DISCUSSION AND CONCLUSIONS
 ACKNOWLEDGMENTS
 REFERENCES

• Dong-Goo Roh(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea) Corresponding Author
• Jin Choi(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea, Korea University of Science and Technology, Daejeon 34113, Korea)
• Jung Hyun Jo(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea, Korea University of Science and Technology, Daejeon 34113, Korea)
• Hong-Suh Yim(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Sun-Youp Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Maru Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea, Chungbuk National University, Cheongju 28644, Korea)
• Young-Jun Choi(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Young-Ho Bae(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Young-Sik Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Hyun-Jung Jang(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Sungki Cho(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea, Korea University of Science and Technology, Daejeon 34113, Korea)
• Ji-Hye Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)
• Jang-Hyun Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Korea)