期刊
ASTRONOMY & ASTROPHYSICS
卷 376, 期 2, 页码 745-750出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20011001
关键词
techniques : photometric; astronomical data bases : miscellaneous; open clusters : individual :; NGC 7790
Photometric U and I standard sequences in the field of the open cluster NGC7790 are presented. The intention is to achieve wide ranges in magnitude and colour, making these sequences suitable for calibrating deep CCD photometry. The 84 standard stars extend the BVR sequences of Odewahn et al. (1992) to the near UV and IR, respectively.
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