보현산 다목적 댐 건설지역은 경상북도 영천시 화북면에 위치하고 있으며, 건설 계획은 2010년 1월을 시작으로 2014년 12월에 완공할 예정이다. 본 조사는 환경영 향평가와 환경영향조사로 나뉘는데 매년 분기 별로 조사를 실시하였으며, 환경영 향평가는 2009년 3월부터 2009년 10월까지 조사하였으며, 환경영향조사는 2010 년 9월을 시작으로 현재까지 진행중에 있다. 조사 지점은 댐건설시 영향을 미칠 것 으로 예상되는 지역을 총 3지점으로 설정, 지점내 정점조사구를 설정하여 실시하 였다. A지점 정점조사구 2개(St. 1, St. 2), B지점 2개(St. 3, St. 4), C지점 3개(St. 5, St. 6, St. 7)를 설정하여 조사를 실시하였다. 본 조사는 댐 건설로 인한 이 지역의 곤 충상 변화와 주요 출현종의 분포 현황을 파악하려고 하였으며, 법정보호종, 특산 종, 희귀종, 특정개체군 출현 및 서식지 파악과 번식 유뮤, 이동성, 서식환경의 특성 조사를 하기 위해 실행하였다. 조사 결과 총 15목 143과 628종이 조사되었으며, 환 경영향조사 때는 13목 95과 332종이 조사되었다. 그리고 조사기간 동안 개발된 B 지점과 개발이 안된 A지점, C지점간의 곤충상 변화의 차이를 확인 할 수 있었다.

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 The TCS2 was operated stable for a long time, but the hardware and TCS computers have been deteriorated and are out of date now.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.

보현산 다목적 댐 건설지역은 경상북도 영천시 화북면에 위치하며, 2009년 12월 7일부터 건설 시작되었다. 본 조사는 댐 건설로 인한 이 지역의 곤충상 변화를 알아보고자 실시하였으며, 댐 건설의 진행에 따른 주요종, 고유종 또는 특이종들의 변화과정과 종 구성 변화에 대해서도 알아보고자 하였다. 보현산 다목적 댐 건설지역 을 총 3구역 7개 정점조사구를 설정하여 2010년 10월 2일 부터 2012년 3월 17일까지 매년 4회 분기를 나누어 총 7회 현지조사를 실시하였다. 조사는 주간조사를 실시 하였으며 조사방법으로는 쓸어잡기법(sweeping), 털어잡기법(beating), 채어잡기법(brandishing), 흡충관 이용, 예상 서식지 조사 및 돌 들추기 등의 임의 채집법 등을 중심으로 조사지역 내의 여러 장소에서 실시하고, 서식 환경에 따라서 적절한 조사방법을 이용하여 가급적 다양한 분류군이 확인되도록 하였다. 그리고 현장에서 쓸어잡기법으로 조사된 채집물은 80% 이상 알코올 액침 또는 지퍼팩에 임시 보관하여 실험실에서 sorting, 실체현미경에서 동정, 분류하였다. 동정시 확인하는데 시일이 걸리는 미소종은 제외하였다. 조사결과 2010년 3분기 8목 26과 44속 47종, 2011년 1분기 6목 12과 24종, 2011년 2분기 9목 59과 149종, 2011년 3분기 10목 50과 121종, 2011년 4분기 10목 35과 84종, 2012년 1분기 5목 17과 33종이 출현하였으며 전체 조사결과는 총 13목 95과 306종으로 조사되었다.

We plan to install the polarimetric optics in the AGU(acqusition and guiding unit) of the 1.8 m telescope at the BOAO(Bohyunsan Optical Astronomy Observatory). With this, the spectropolarimetric observations with the resolution of 45,000 and 60,000 in 4,000 to 8,000＼AA ange could be done by the BOES(BOao Echelle Spectrograph). If we use the precision radial velocity measurement capability of the BOES, the accuracy of the magnetic field intensity measurements with this new BOES stokesmeter will be much increased. We present here the design concept of the BOES stokesmeter. Some details on the optics, mechanical parts, fiber parts and the lab test procedures of this stokesmeter are explained.

We have been performing a wide-field photometric monitoring program, named SPVS (Short-Period Variability Survey), at the Bohyunsan Optical Astronomy Observatory (BOAO). The observation system consists of a small refracting telescope (D = 155 mm, f = 1050 mm) and a 2k×3k CCD Camera. The field of view is 1.0°×1.5°. Detection limit is about V = 13 for short-period small amplitude variables such as δ Scuti-type pulsating stars, and about V = 15 for long-period large amplitude variables such as eclipsing binaries and RR Lyrae stars. The instrument is designed to be remote-controlled through internet. The primary purpose of this project is to search for variable objects in bright Galactic open clusters. We present results of test observations conducted towards NGC 7092.

Observation environment of the Bohyunsan Optical Astronomy Observatory(BOAO) has been examined using various statistical data including real observation times versus allocated times and seeing statistics. The data have been collected from the observation logs of the 1.8m telescope in the period 1998 - 2004. New criteria have been set up to calculate a more realistic observation efficiency of the observatory. The new statistical analysis based on the new criteria gives the overall observation efficiency of BOAO as 38.6%, that is equivalent to 115.8 observable nights out of 300 allocatable nights. The seeing statistics shows that the mean seeing measured at the focal images is 2".3. The present study of the observation environment of BOAO suggests that differential photometry and spectroscopy should be preferred modes of observation to maximize the productivity of BOAO.

We present the detailed description on the fiber techniques adopted in the BOES: the design concepts and manufacturing of the v grooves, the procedures of the fiber polishing, adhering of the fibers to the v grooves, and the axis alignment of the fiber input and exit. The high efficiency and throughput of the BOES imply that the adopted fiber arts and the other optical components were well designed and properly treated. We learned that the relatively low efficiency of the 80 micron fiber comparing with the 200 and 300 micron fibers comes from the seeing and the guiding effects not from the poor fiber handling.

We tested the characteristics of the newly made Long Slit Spectrograph (LSS) of the BOAO which replaced the Medium Dispersion Spectrograph (MDS) in the year of 2003. Performance test results on the spectrogram shift by gravity direction variation, slit illumination function, efficiency and the precision of the radial velocity measurements show the capabilities of the LSS are much improved in every respect comparing with those of the MDS.

Korean Astronomical Data Center (KADC, http://kadc.kao.re.kr) in Korea Astronomy Observatory (KAO) has constructed an archive of Bohyunsan Optical Astronomy Observatory (BOAO) 1.8m telescope data. The archive is consisted of photometric (1KCCD, 2KCCD) and spectroscopic data of 400GB amount for the period of 1997 to 2002,and the first web service is made of the data from 1997 to 2001. In the search page, primary search criterion of object name or coordinates is used. Users can also refine the search criteria using parameters such as observation date, observer(s), data type, and/or instrument. The data identified from the search can be uploaded to the FTP site for further downloading in FITS format. This archive is the first DB of astronomical data made in Korea.

We present the characteristics of the 2K CCD camera at the Bohyunsan Optical Astronomy Observatory of the Korea Astronomy Observatory at the time of its development. The purpose of this paper is to support the observers who may need detailed information on the characteristics of the camera and to provide helpful information on the optimization' of a CCD camera for those who try to develop their own camera. The 2K CCD camera was optimized to have a gain of 1.8e−/ADU and a read out noise of 7e− from an experiment using radioactive 55 Fe X-ray source. The charge transfer efficiency was measured as 0.9999976 for serial and 0.9999942 for parallel direction, which means 0.5% charge loss along the serial direction and 1.2% along the parallel direction across the chip. The quantum efficiency of the camera was measured from an experiment using a homogeneous light source consisting of a halogen lamp and an integrating sphere with a monochromator. The resulting quantum efficiency of the camera peaked at the wavelength range 600-700 nm with the value of ＼-0.89 .