Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Wonyong Han"'
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 36, Iss 2, Pp 75-86 (2019)
UV Psc is a typical RS CVn type system undergoing dynamic chromosphere activity. We performed photometric observations of the system in 2015 and secured new BVR light curves showing well-defined photometric waves. In this paper, we analyzed the light
Externí odkaz:
https://doaj.org/article/68cdebd9870e40a99108002e78cd0e05
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 4, Pp 341-348 (2015)
New observations for the times of minimum lights of a well-known apsidal motion star CW Cephei were made using a 0.6 m wide field telescope at Jincheon station of Chungbuk National University Observatory, Korea during the 2015 observational season.
Externí odkaz:
https://doaj.org/article/08269a6813214d2386419e09bf8e3f5d
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 1, Pp 21-32 (2015)
We have carried out photometric follow-up observations of bright transiting extrasolar planets using the CbNUOJ 0.6 m telescope. We have tested the possibility of obtaining high photometric precision by applying the telescope defocus technique, all
Externí odkaz:
https://doaj.org/article/1e77be4eb76046c9863afb75bb0fce91
Autor:
Joh-Na Yoon, Yong Sam Lee, Chun-Hwey Kim, Yonggi Kim, Hong-Suh Yim, Wonyong Han, Jang Hae Jeong
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 29, Iss 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 de
Externí odkaz:
https://doaj.org/article/8754c49447144d25aeb0a0aa5da4a047
Autor:
Kwijong Park, Bongkon Moon, Dae-Hee Lee, Woong-Seob Jeong, Uk-Won Nam, Youngsik Park, Jeonghyun Pyo, Wonyong Han
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 29, Iss 3, Pp 321-328 (2012)
We have designed a 30 cm cryogenic space infrared telescope for astronomical observation. The telescope is designed to observe in the wavelength range of 0.5~2.1 μm, when it is cooled down to 77 K. The result of the preliminary design of the support
Externí odkaz:
https://doaj.org/article/5ae743c35c74468dbcf1499606bb57af
Autor:
Duk-Hang Lee, Wonyong Han, Bongkon Moon, Youngsik Park, Woong-Seob Jeong, Kwijong Park, Dae-Hee Lee, Jeonghyun Pyo, Il-Joong Kim, Min-Gyu Kim, Toshio Matsumoto
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 29, Iss 3, Pp 305-313 (2012)
We conducted thermal analyses and cooling tests of the space observation camera (SOC) of the multi-purpose infrared imaging system (MIRIS) to verify passive cooling. The thermal analyses were conducted with NX 7.0 TMG for two cases of attitude of the
Externí odkaz:
https://doaj.org/article/70fa1702ec2e476b8045c116fe4763ac
Autor:
Dae-Hee Lee, Wonyong Han, Youngsik Park, Sung-Jun Park, Bongkon Moon, Chang Hee Ree, Jeonghyun Pyo, Woong-Seob Jeong, Uk-Won Nam, Duk-Hang Lee, Kwijong Park, Sooho Bae, Seung-Wu Rhee, Jong-Oh Park, Geon-Hee Kim, Sun-Choel Yang, Young-Ju Kim
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 28, Iss 3, Pp 225-232 (2011)
We have designed and manufactured the Earth observation camera (EOC) of multi-purpose infrared imaging system (MIRIS). MIRIS is a main payload of the STSAT-3, which will be launched in late 2012. The main objective of the EOC is to test the operati
Externí odkaz:
https://doaj.org/article/3e1fab5bdbab4f77b3317ca096a23644
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 27, Iss 4, Pp 337-343 (2010)
Optical observation system provides angle-only measurement for orbit determination of space object. Range measurement can be directly acquired using laser ranging or tone ranging system. Initial orbit determination (IOD) by using angle- only data s
Externí odkaz:
https://doaj.org/article/ea806500fdbd455d83056ef178b50244
Autor:
Chun-Hwey Kim, Ho-Il Kim, Tae Seog Yoon, Wonyong Han, Jae Woo Lee, Chung-Uk Lee, Jin-Hyung Kim, Robert H. Koch
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 27, Iss 4, Pp 263-278 (2010)
Many filtered CCD measures form the basis of six new light curves of the eclipsing system SW Lyn. From these measures and additional observations for eclipse timing, 47 new times of minimum light over the time-interval of about 13 years have been c
Externí odkaz:
https://doaj.org/article/adae15f588754a079efde5a449693fd7
Autor:
Sung-Yeol Yu, Hyun-Su Yi, Jae Hyeob Lee, Hong-Suh Yim, Young-Jun Choi, Ho Soon Yang, Yun Woo Lee, Hong-Kyu Moon, Yong-Ik Byun, Wonyong Han
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 27, Iss 2, Pp 153-160 (2010)
We modified the optical system of 500 mm wide-field telescope of which point spread function showed an irregularity. The telescope has been operated for Near Earth Space Survey (NESS) located at Siding Spring Observatory (SSO) in Australia, and the
Externí odkaz:
https://doaj.org/article/96bed727f85e443d9ace91591fadc2ff