![](https://bmk10k.aip.de/wp-content/uploads/2017/03/BMK_sensitivity_new.png)
The final system’s bandpass is defined by the Zeiss objective “C”-filter transmission convolved with the CCD quantum efficiency. The latter has been measured and is given in Table 2 and the former was defined by Zeiss in their original handbook. Figure 10 shows the convolution of the two response curves.