We analyzed the current status of the telescope control system (TCS2) of the 1.8 m telescope in Bohyunsan Optical Astronomy Observatory (BOAO), and suggest a new TCS (TCS3) for the long term development of BOAO. The TCS2 was constructed in 1998 to replace the TCS1 which was installed with the telescope itself at the commencement of BOAO. One of the important parts of TCS is PMAC (Programmable Multi-Axis Controller), which is a general-purpose multi-axis motion controller. PMAC provides the direct interactive communication environment permitting users to command the controller directly with simple operations. This makes the setup, debugging, and diagnostics very easy. The TCS2 was operated stable for a long time, but the hardware and TCS computers have been deteriorated and are out of date now. The new TCS3 needs to be constructed based on a modern computer system. And functions such as pre-calculations of telescope limiting position, interworking with virtual observatory tools, and using GUI, etc should be added. Construction of the TCS3 will be a step creating a better observation environment for the Korean astronomical society.

ABSTRACT
1. 서론
2. 보현산천문대 관측환경
    2.1. 1.8 m 망원경
    2.2. 관측기기
3. 보현산천문대 TCS
    3.1. TCS2의 H/W구성
    3.2. 1.8 m 망원경 서보 제어시스템
    3.3. 1.8 m 망원경 3축 제어 모터 시스템
4. 보현산천문대 TCS3 개발
    4.1. PMAC
    4.2. TCS와 OCS
    4.3. TCS3 구축
5. 결론
참고 문헌

• 성현일(한국천문연구원) | HYUN-IL SUNG (Korea Astronomy and Space Science Institute)
• 박윤호(한국천문연구원) | YOON-HO PARK (Korea Astronomy and Space Science Institute)
• 이상민(한국천문연구원) | SANG-MIN LEE (Korea Astronomy and Space Science Institute)
• 이병철(한국천문연구원) | BYEONG-CHEOL LEE (Korea Astronomy and Space Science Institute)
• 성현철(한국천문연구원) | HYEON-CHEOL SEONG (Korea Astronomy and Space Science Institute)
• 오형일(한국천문연구원) | HYUNG-IL OH (Korea Astronomy and Space Science Institute)