• KASI NEWSLETTER
• /
• s.73
• /
• pp.18-19
• /
• 2008

• KASI NEWSLETTER
• /
• s.85
• /
• pp.18-19
• /
• 2009

• KASI NEWSLETTER
• /
• s.86
• /
• pp.18-19
• /
• 2009

• KASI NEWSLETTER
• /
• s.81
• /
• pp.18-19
• /
• 2008

• The Bulletin of The Korean Astronomical Society
• /
• v.36 no.1
• /
• pp.51.2-51.2
• /
• 2011

The Spitzer Public Legacy Survey of the UKIDSS Ultra Deep Survey (SpUDS) has been carried out with four IRAC bands and one MIPS band (24um). SpUDS surveys 1 square degree of the UDS field, that has been covered by one of the deepest near IR surveys and by various multiwavelength observations from X-ray to radio (XMM, GALEX, Subaru, SCUBA, VLA). We present a summary of the photometric data including number counts derived at 3.6-24 microns. In conjunction with extensive multiwavelengh data, we are able to show the multiwavelenght color distribution of MIR sources, and how different SED types contribute to the number counts.

• Journal of Astronomy and Space Sciences
• /
• v.29 no.4
• /
• pp.397-405
• /
• 2012

Astronomical Observations at Chungbuk National University Observatory (CBNUO) with an 1 m telescope have begun since April 2008, and Near-Earth Space Survey observations also have been started since November 2010, with a 0.6 m wide field telescope developed by Korea Astronomy and Space Science Institute. To improve observational efficiency, we developed a weather monitoring system enabling automatic monitoring for the weather conditions and checking the status of the observational circumstances, such as dome status. We hope this weather monitoring system can be helpful to more than 100 Korean domestic observatories, including public outreach facilities. In this paper, we present the statistic analysis of the weather conditions collected at CBNUO for 3 years (2009- 2011) and comparisons were made for clear nights between using only humidity data and both humidity and cloud data.

• KASI NEWSLETTER
• /
• s.75
• /
• pp.18-19
• /
• 2008

• Journal of Astronomy and Space Sciences
• /
• v.24 no.3
• /
• pp.209-218
• /
• 2007

In this paper, we have presented the observational result for the photometric quality of main telescopes in Gimhae Astronomical Observatory. Also we performed the observation of searching new minor planets as competitive work in public observatories. The observation was carried out using 60cm telescope of Gimhae Astronomical Observatory on 2007 January 13. And, $Sch\ddot{u}ler$ BVI filters and 1K CCD camera (AP8p) were used. To define the quality of CCD photometry, we observed the region of well-known standard stars in the open cluster M67. From observed data, The transformation coefficients and airmass coefficients were obtained, and the accuracy of CCD photometry was investigated. From PSF photometry, we obtained the color-magnitude diagram of M67, and considered the useful magnitude limit and the physical properties of M67. This method can be successfully used to confirm the photometric quality of main telescope in public observatories. To investigate the detection possibility of unknown object as astroid, we observed the near area of the opposition in the ecliptic plane. And we discussed the result. Our result show that it can be possible to detect minor planets in solar system brighter than $V{\sim}18.3mag$. and it can carry out photometric study brighter than V 16mag. in Gimhae Astronomical Observatory. These results imply that the public observatories can make the research work.

• KASI NEWSLETTER
• /
• s.97
• /
• pp.14-15
• /
• 2010

<'글로벌 인재육성'을 위한 교육현장 지원충실>을 운영지표로 1990년 9월에 개원한 전라남도교육과학연구원은 학생들에게 꿈과 희망, 그리고 창의성 신장을 위해 과학교육 현장지원과 과학문화 확산을 위해 노력하고 있다. 또한 천체관측교육으로 지역특성에 맞게 낙도 및 오지로 ‘찾아가는 천체관측교육’과 별과 문화가 어우러지는 천체관측활동을 통해서 지역사회의 과학문화 확산을 위해 최선을 다하고 있다.

• Bulletin of the Korean Space Science Society
• /
• 2008.10a
• /
• pp.37.1-37.1
• /
• 2008

Space Science and Technology Laboratory at Kyung Hee University developed an 80cm Nasmyth telescope with the joint work of Space & Astronomy, Inc. It was set up at Muju county public astronomical observatory in Jeonlabuk-Do. Nasmyth focus system was selected for the telescope to use two focal points by a rotatable tertiary mirror. Focal ratios of the telescope are f10, f5 respectively. Support of the main mirror is made with Lasalle-system. This system uses 24-points in the back side of the mirror that are all resting on small counter-weights and side support is 10-points Boll link Flexible type with 2 Lasalle type. The mount is wheel & disk type Alt-Azimuth design using DC-servo motors. External high accuracy encoder has 47,600 sine-waves/rot. These encoders are used to make real-time corrections on all gearing errors.