Table 5.
Calibration measurements taken during the year 2015 for the modulation – demodulation efficiencies ϵftϵmod and ϵmod in various filters.
| Filter | tDIT | n | ϵftϵmod | ϵmod | Ratio | ||
|---|---|---|---|---|---|---|---|
| (s) | cam1 | cam2 | cam1 | cam2 | 
|
||
| Fast modulation | |||||||
| V | 8 | 9 | 0.772 | 0.748 | 0.778 | 0.753 | 1.032 |
| R_PRIM | 2 | 3 | 0.805 | 0.747 | 0.828 | 0.768 | |
| N_R | 4 | 8 | 0.818 | 0.751 | 0.829 | 0.761 | 1.089 |
| N_R | 2 | 4 | 0.808 | 0.744 | 0.831 | 0.765 | |
| N_R | 1.1 | 1 | 0.794 | 0.730 | 0.834 | 0.767 | |
| B_Ha | 10 | 1 | 0.824 | 0.778 | 0.829 | 0.782 | |
| VBB | 1.1 | 2 | 0.783 | 0.744 | 0.823 | 0.782 | |
| TiO717 | 8 | 1 | 0.827 | 0.833 | |||
| Cnt847 | 8 | 1 | 0.783 | 0.788 | |||
| Cnt820 | 8 | 2 | 0.807 | 0.767 | 0.813 | 0.772 | |
| N_I | 4 | 8 | 0.802 | 0.774 | 0.813 | 0.785 | 1.036 |
| I_PRIM | 2 | 2 | 0.802 | 0.769 | 0.824 | 0.791 | |
| Slow modulation | |||||||
| V | 10 | 6 | 0.848 | 0.821 | 0.854 | 0.827 | 1.033 |
| N_R | 10 | 7 | 0.904 | 0.831 | 0.911 | 0.837 | 1.088 |
| N_I | 10 | 1 | 0.894 | 0.862 | 0.900 | 0.868 | 1.037 |
| Cnt820 | 10 | 4 | 0.890 | 0.844 | 0.897 | 0.850 | |
| ϵmod(fast)/ϵmod(slow) | 0.908 | 0.908 | |||||
Notes. The third column indicates the number of calibrations used for the mean value given in the following four columns. Recommended values for the V, R, and I bands are highlighted in italics, while the last column gives the corresponding cam1/cam2 ratios and the bottom row the fast to slow modulation for these filters. The scatter for multiple calibrations taken with the same setup is σϵ ≈ 0.003–0.005.
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