BVI photometry of NGC 7790
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CCD photometry of the northern open star cluster NGC 7790 has been carried out in BVI photometric passbands down to V~21mag for 1150 stars of which for ~700 stars, the data is...
针对北天疏散星团NGC 7790，研究人员已在BVI测光波段（BVI photometric passbands）开展CCD测光（CCD photometry）观测，涵盖1150颗恒星，观测极限暗至V星等约21等，其中约700颗恒星的观测数据为……
