Tables of transmission and S/N in various filters
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ATRAN TRANSMISSION AND S/N THROUGH VARIOUS MID-IR FILTERS ON MAUNA KEA AND CERRO PACHO (S/N est. includes 4% telescope + instrument emissivity) ===================================================================== MAUNA KEA Transmission S/N (norm to secz=1,1mm H2O) 1.0mm 1.6mm 3.0mm 5.0mm H2O 1.0mm 1.6mm 3.0mm 5.0mm airmass Si-1 1.0 0.64 0.61 0.55 0.51 1.00 0.92 0.78 0.69 1.5 0.57 0.54 0.48 0.43 0.82 0.75 0.63 0.54 2.0 0.52 0.48 0.43 0.38 0.71 0.63 0.54 0.46 Si-2 1.0 0.954 0.947 0.932 0.918 1.00 0.95 0.87 0.81 1.5 0.936 0.926 0.906 0.887 0.89 0.84 0.76 0.70 2.0 0.918 0.906 0.883 0.861 0.81 0.76 0.69 0.63 Si-3 1.0 0.727 0.725 0.721 0.716 1.00 0.99 0.98 0.97 1.5 0.671 0.668 0.662 0.655 0.85 0.84 0.83 0.81 2.0 0.627 0.624 0.616 0.608 0.75 0.74 0.73 0.71 Si-4 1.0 0.927 0.925 0.920 0.914 1.00 0.99 0.96 0.93 1.5 0.905 0.902 0.895 0.887 0.89 0.88 0.85 0.82 2.0 0.887 0.883 0.874 0.863 0.82 0.81 0.78 0.74 Si-5 1.0 0.984 0.980 0.971 0.962 1.00 0.96 0.89 0.83 1.5 0.975 0.970 0.957 0.945 0.92 0.88 0.80 0.74 2.0 0.967 0.960 0.945 0.929 0.86 0.82 0.74 0.67 N' 1.0 0.982 0.979 0.971 0.962 1.00 0.97 0.91 0.84 1.5 0.974 0.968 0.957 0.945 0.93 0.88 0.81 0.75 2.0 0.965 0.958 0.944 0.930 0.86 0.82 0.75 0.69 Si-6 1.0 0.951 0.943 0.928 0.914 1.00 0.95 0.87 0.81 1.5 0.929 0.919 0.900 0.882 0.87 0.83 0.75 0.70 2.0 0.909 0.897 0.874 0.852 0.79 0.74 0.67 0.62 Qa 1.0 0.78 0.73 0.64 0.56 1.00 0.86 0.66 0.53 1.5 0.72 0.66 0.56 0.48 0.83 0.70 0.53 0.42 2.0 0.68 0.61 0.49 0.41 0.74 0.61 0.43 0.34 Qc 1.0 0.76 0.66 0.49 0.36 1.00 0.75 0.46 0.30 1.5 0.67 0.55 0.36 0.23 0.77 0.55 0.30 0.18 2.0 0.60 0.46 0.27 0.09 0.63 0.42 0.21 0.06 -------------------------------------------------------------------- CERRO PACHON Transmission S/N (norm to secz=1,2.3mm H2O) 2.3mm 4.3mm 7.6mm 10mm H2O 2.3mm 4.3mm 7.6mm 10mm airmass Si-1 1.0 0.52 0.47 0.43 0.39 1.00 0.86 0.76 0.67 1.5 0.45 0.40 0.35 0.31 0.81 0.69 0.58 0.50 2.0 0.40 0.34 0.30 0.28 0.69 0.56 0.48 0.45 Si-2 1.0 0.929 0.909 0.890 0.870 1.00 0.90 0.82 0.76 1.5 0.901 0.876 0.851 0.826 0.87 0.76 0.70 0.64 2.0 0.877 0.847 0.817 0.786 0.78 0.69 0.62 0.56 Si-3 1.0 0.759 0.749 0.738 0.727 1.00 0.97 0.94 0.91 1.5 0.709 0.695 0.681 0.667 0.86 0.83 0.79 0.76 2.0 0.669 0.653 0.637 0.619 0.77 0.73 0.70 0.66 Si-4 1.0 0.916 0.908 0.900 0.890 1.00 0.96 0.92 0.88 1.5 0.889 0.879 0.867 0.853 0.88 0.84 0.80 0.76 2.0 0.866 0.853 0.837 0.821 0.80 0.76 0.71 0.67 Si-5 1.0 0.967 0.955 0.941 0.927 1.00 0.92 0.84 0.77 1.5 0.951 0.934 0.916 0.897 0.89 0.80 0.73 0.66 2.0 0.937 0.916 0.893 0.870 0.82 0.73 0.65 0.59 N' 1.0 0.966 0.955 0.943 0.929 1.00 0.92 0.85 0.79 1.5 0.950 0.935 0.918 0.900 0.89 0.81 0.74 0.68 2.0 0.935 0.916 0.895 0.873 0.81 0.73 0.66 0.60 Si-6 1.0 0.914 0.895 0.877 0.857 1.00 0.91 0.84 0.78 1.5 0.880 0.855 0.832 0.807 0.85 0.77 0.71 0.65 2.0 0.848 0.820 0.793 0.763 0.75 0.68 0.62 0.56 Qa 1.0 0.62 0.53 0.45 0.38 1.00 0.78 0.61 0.49 1.5 0.54 0.44 0.36 0.28 0.80 0.59 0.46 0.34 2.0 0.48 0.37 0.29 0.22 0.67 0.47 0.35 0.25 Qbroad 1.0 0.40 0.29 0.23 0.17 1.00 0.67 0.51 0.36 1.5 0.31 0.22 0.16 0.11 0.85 0.49 0.34 0.23 2.0 0.26 0.17 0.115 0.08 0.59 0.36 0.24 0.16 Qb 1.0 0.25 0.15 0.10 0.06 1.00 0.56 0.37 0.22 1.5 0.17 0.09 0.05 0.02 0.65 0.33 0.18 0.07 2.0 0.13 0.06 0.03 0.01 0.48 0.22 0.11 0.04