CCD standards for U and I in NGC 7790
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Photometric U and I standard sequences in the field of the open cluster NGC 7790 are presented. The intention is to achieve wide ranges in magnitude and colour, making these...
本文给出了疏散星团(open cluster)NGC 7790天区中的测光U、I波段标准序列。本研究旨在覆盖宽泛的星等与色指数范围，以使这些……
