# Total throughput accounts for # * MMT M1 and M2 reflectivity (perfect aluminum) # * 0.87 of 6.5m aperture makes it through Lyot stop # * Janos supplied AR coating data of 28 surfaces # they measured R; we assume T=1-R which may be optimistic # * internal transmission of lenses # * QE of h2rg from M. Rieke via C. Willmer # # Not included: # * filters # * grisms # * atmosphere wave total coatings mmt intrans lyot h2rg ---- -------- ----------- ------ ------- ---- -------- 0.9 0.364137 0.641584159 0.87 0.995 0.87 0.753615 1 0.499674 0.845116121 0.8836 0.9938 0.87 0.773921 1.05 0.526897 0.87517592 0.8889 0.9928 0.87 0.784145 1.1 0.536676 0.875652731 0.8942 0.9918 0.87 0.794333 1.15 0.52801 0.84646324 0.8995 0.9909 0.87 0.804422 1.2 0.515744 0.812756606 0.9048 0.9899 0.87 0.814349 1.25 0.512465 0.795199236 0.9101 0.9877 0.87 0.824053 1.3 0.514583 0.786638544 0.9155 0.9854 0.87 0.83347 1.35 0.523464 0.788887627 0.9208 0.9831 0.87 0.842538 1.4 0.540658 0.800508533 0.9262 0.9847 0.87 0.851194 1.45 0.555746 0.808566592 0.9316 0.9868 0.87 0.859375 1.5 0.568789 0.813870248 0.9370 0.9888 0.87 0.867019 1.55 0.568702 0.807315522 0.9378 0.9878 0.87 0.874064 1.6 0.566771 0.798869842 0.9386 0.9868 0.87 0.880446 1.7 0.557829 0.779369249 0.9401 0.9822 0.87 0.890973 1.8 0.560694 0.779566862 0.9417 0.9775 0.87 0.898099 1.9 0.58574 0.811846884 0.9432 0.9755 0.87 0.901323 2 0.610093 0.847098572 0.9448 0.9734 0.87 0.900143 2.1 0.605467 0.867146685 0.9463 0.9486 0.87 0.89406 2.15 0.586902 0.85570207 0.9471 0.9363 0.87 0.889023 2.2 0.558213 0.830033747 0.9479 0.9240 0.87 0.882572 2.25 0.521203 0.783656669 0.9487 0.9213 0.87 0.874645 2.3 0.472847 0.720235416 0.9495 0.9186 0.87 0.865178 2.4 0.366687 0.578592618 0.9510 0.9104 0.87 0.841377 2.5 0.248606 0.4265 0.9526 0.8676 0.87 0.810668