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http://dx.doi.org/10.5140/JASS.2008.25.2.087

BVRI Standardization of the CCD Photometric System of Sobaeksan Optical Astronomy Observatory  

Jeong, Jang-Hae (Dept. of Astronomy and Space Science, Chungbuk National University)
Kim, Chun-Hwey (Dept. of Astronomy and Space Science, Chungbuk National University)
Lee, Yong-Sam (Dept. of Astronomy and Space Science, Chungbuk National University)
Publication Information
Journal of Astronomy and Space Sciences / v.25, no.2, 2008 , pp. 87-100 More about this Journal
Abstract
A total of 792 CCD images of V523 Cas were obtained on four nights of Jan. 2003 with the bvri CCD photometric system attached to a 61cm reflector of Sobaeksan Optical Astronomy Observatory (SOAO). The 17 standard stars in the images were used to establish transformation relations between our bvri system and the standard Johnson-Cousins BVRI system. We derived the tentative equations of transformation between two photometric systems as follows; V=v-0.0689(B-V)+0.0063, B-V=1.3197(b-v)-0.1733, V-R=0.9210(v-r)-0.1309, R-I=0.8892(r-i)-0.1055. Using these equations standard V magnitudes and their color indexes (B-V, V-R, R-I) for 57 stars in the field of the image were determined.
Keywords
CCD observations; BVRI standardization;
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