Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Il-Seong Nha"'
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 30, Iss 1, Pp 69-77 (2013)
We have uncovered 14 Korean royal astronomers and one scientist who worked in the early and mid-18th century. In spite of their high positions in the government office, all of them but one were not recorded anywhere in the major histories, such as Wa
Externí odkaz:
https://doaj.org/article/addb71feca584e31ab231005d85eb17d
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 29, Iss 2, Pp 209-220 (2012)
This paper will introduce and overview in general the Seongbyeon Deungrok issued by the Gwansang-gam, the Astronomical Board in the Joseon Dynasty of Korea. All the Chinese characters in the 1668 Seongbyeon Deungrok was deciphered at first and these
Externí odkaz:
https://doaj.org/article/c0a585f067584dc79c770faa0c22967d
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 14, Iss 1, Pp 44-58 (1997)
The BVR CCD photometric observations of W UMa-type eclipsing binary 55 Ari were made on ten nights from November 1996 to December 1996. Eight new times of minimum lights were derived. The analysis of times of minima of 55 Ari confirms the suggestions
Externí odkaz:
https://doaj.org/article/c35fa40224494c15959484a3b8f582cb
Autor:
Il-Seong Nha
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 11, Iss 1, Pp 21-30 (1994)
VV Cep-type long period spectroscopic-eclipsing binary AZ Cas has been observed for five years, 1985 Oct ~ 1990 Feb, in UBV at the Ilsan Station of Yonsei University Observatory. A total of 431 observations (U=129, B=142 and V=160) are made for 86 ni
Externí odkaz:
https://doaj.org/article/0f1bc6d4ca994510918670b4f12662f8
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 9, Iss 2, Pp 127-134 (1992)
UBV ovservation of ζ Aur star 32 Cyg have been at the Yonsei University Observatory suing the 60-cm Goto reflector and five years, 1988-1992. Observations made during these years cover outside of eclipse phase only. No significant light variation wh
Externí odkaz:
https://doaj.org/article/05232fe979c54b7aafe879b72a719e47
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 9, Iss 2, Pp 135-142 (1992)
Surface activity of the late-type supergiant component of ζ Aurtype eclipsing binary 32 Cyg has been searched in R and I passbands for 53 nights in the 1991 season. Atmospheric extinctions in these wavelength regions are made and a linear relation b
Externí odkaz:
https://doaj.org/article/c2b2787c487d41adb7c91bbf3c7d6a91
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 9, Iss 1, Pp 41-51 (1992)
Photoelectric observations of close binary stars, AO Cam and AW Cam, were made during the 1984 observing season with the 61cm reflector at the Sobaeksan Observatory. One time of primary minimum for AO Cam and three primary epochs for AW Cam were deri
Externí odkaz:
https://doaj.org/article/75ca14da7ac045ba86cfee68fdd7ca54
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 9, Iss 1, Pp 89-96 (1992)
UBV observations of VV Cep were made in 1988-1992 as a part of the Ten-year Observing Program for Long Period Eclipsing Binary Stars (1982-1992) at Yonsei University Observatory. In addition to these the observations in the longer passbands in R and
Externí odkaz:
https://doaj.org/article/7a7f92feadf945fca88e8eb306ab71fc
Autor:
Il-Seong Nha
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 8, Iss 2, Pp 149-158 (1991)
Sixteen unitary Light curves of AR Lac in B and V are made at Yonsei University Observatory in the period of 1980-1988. Some overview findings of light variations are made. (1) The light variations outside eclipse follow none of the wave migration pa
Externí odkaz:
https://doaj.org/article/5f0562503f03402d85ebc5852c1b9a43
Autor:
Il-Seong Nha
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 8, Iss 2, Pp 125-131 (1991)
UBV observations at Yonsei University Observatory(500 and 537 observations each at Ilsan Station and at Campus Station) were made for the latest eclipse of ζ Aur in 1987-1988. Orbital period of Saijo and Saito has been confirmed and the light and co
Externí odkaz:
https://doaj.org/article/abf21f62f5fa49eaa20b4e4b0dac8cf8