CCD测光观测中积分时间的选取，对测光结果的误差大小有很大影响。

Integration time is important to error of photometrical results in CCD photometric and observation.

youdao

CCD测光观测中积分时间的选取，对测光结果的误差大小有很大影响。

Integration time is important to error of photometrical results in CCD photometric and observation.

youdao