We present the results of the one year monitoring of absorption and scattering lengths of light with wavelengths in the range of 375 nm to 532 nm within the effective volume of the deep underwater neutrino telescope Baikal-GVD, which were measured by a device named ≪BAIKAL-5D≫. ≪BAIKAL-5D≫ was installed during the 2020 winter expedition at a depth of 1250 m. To carry out the optical measurements, we use a device with a shaded point-like isotropic light source having a spectral resolution of about 3 nm. A wide angle light receiver is moved by a stepper motor so that the distance between the receiver and the light source can vary from 0.9 m to 7.4 m. The absorption and scattering lengths were measured every week in 6 spectral points. The short-time variation of absorption length was estimated.

我们展示了在深水中微子望远镜 Baikal-GVD 的有效体积内对波长在 375 nm 至 532 nm 范围内的光的吸收和散射长度进行一年监测的结果，该结果由名为 ≪ BAIKAL 的设备测量-5D≫。≪BAIKAL-5D≫ 是在 2020 年冬季探险期间安装在 1250 m 深度的。为了进行光学测量，我们使用带有阴影点状各向同性光源的设备，其光谱分辨率约为 3 nm。广角光接收器由步进电机移动，因此接收器和光源之间的距离可以在 0.9 m 到 7.4 m 之间变化。每周在 6 个光谱点测量吸收和散射长度。估计吸收长度的短时变化。