Berkeley 64 and 69 stars UBVRI photometry

We present UBVRI CCD photometry for previously unstudied open clusters (Be 64 and Be 69). Photometry has also been carried out for nearby fields to correct f or the effects of...本研究提供了此前未被研究的两个疏散星团（Be 64与Be 69）的UBVRI波段电荷耦合器件（Charge-Coupled Device, CCD）测光数据。此外，还针对邻近天区开展了测光观测，以校正……带来的影响。