BVRI Standardization of the CCD Photometric System of Sobaeksan Optical Astronomy Observatory
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 sy...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Space Science Society (KSSS)
2008-06-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2008/v25n2/OJOOBS_2008_v25n2_87.pdf |
| Summary: | 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.
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| ISSN: | 2093-5587 2093-1409 |