The CS00025000 (CS-250) is a set of Visible Spectrum Calibration Filters. It includes four (4) calibrated absorptive neutral density filters, one (1) Holmium Oxide filter, and one (1) blank filter holder, packaged in a wooden storage case.


CS00025000 (CS-250)是一套可见光谱校准滤波器。它包括四个(4)校准的吸收中性密度过滤器,一个(1)氧化钬过滤器,和一个(1)空白过滤器支架,包装在一个木制存储盒。