# Subaru Telescope Infrared Tertiary Mirror In-Situ Measured Reflectivity # Coated with Silver on 2014-12-17 # Opened the vacuum chamber: No information # Measured with Subaru Portable Spectrophotometer (SPS) on 2021-08-12 (2430 days after) # Measured three times # Data between 950 nm and 1650 nm are also available (SPS-XWW). # Contact: Hirofumi Okita (okita14@naoj.org) # # Wavelength (nm) #1 #2 #3 1000 93.09 92.29 92.88 998 92.33 92.20 92.10 996 92.01 92.68 93.10 994 93.14 91.33 92.77 992 92.36 91.96 93.70 990 92.43 92.18 93.94 988 93.37 92.41 91.88 986 92.81 92.08 92.84 984 92.50 92.37 93.67 982 92.91 92.33 92.42 980 92.21 92.07 92.73 978 92.60 92.58 92.56 976 93.39 92.13 92.97 974 92.42 92.57 93.66 972 92.47 92.19 92.90 970 92.87 92.70 91.91 968 92.64 91.56 92.11 966 92.76 92.63 92.49 964 92.49 92.39 92.44 962 92.96 92.31 92.97 960 93.25 92.35 92.84 958 93.09 92.44 93.29 956 92.80 92.57 92.69 954 92.89 92.50 92.50 952 92.40 91.56 92.55 950 92.98 91.96 93.01 948 92.59 92.43 92.14 946 92.35 91.77 92.77 944 92.89 92.09 92.99 942 92.70 91.73 92.59 940 93.14 92.10 92.55 938 92.65 91.86 92.75 936 92.93 92.46 92.95 934 92.71 92.07 92.27 932 92.64 92.52 92.49 930 92.33 92.25 92.63 928 93.10 91.69 92.47 926 92.73 91.79 92.68 924 93.37 92.33 92.84 922 92.24 91.91 92.49 920 92.41 92.16 92.48 918 92.32 92.00 92.90 916 92.59 91.81 92.57 914 92.67 91.75 91.92 912 92.91 91.68 92.42 910 92.54 91.81 92.36 908 92.34 92.27 92.03 906 92.10 92.04 92.25 904 91.73 91.61 92.40 902 91.96 91.59 92.16 900 92.05 92.01 92.05 898 92.08 91.90 92.54 896 92.17 91.48 91.82 894 92.13 91.50 92.21 892 91.92 91.86 92.21 890 92.03 91.63 92.15 888 92.30 91.86 92.08 886 92.02 91.28 91.91 884 91.81 91.50 91.97 882 91.95 91.45 92.02 880 91.83 91.46 92.20 878 91.75 91.51 92.18 876 91.82 91.65 91.88 874 91.67 91.45 91.89 872 92.12 91.51 91.78 870 91.66 91.22 91.74 868 92.06 91.59 91.40 866 91.83 91.58 91.85 864 91.94 90.96 91.68 862 91.60 91.58 91.74 860 91.66 91.02 91.57 858 91.86 91.37 91.55 856 91.39 91.27 91.83 854 91.36 91.17 91.53 852 91.76 91.01 91.59 850 91.73 91.03 91.74 848 91.48 91.27 91.32 846 91.43 91.51 91.33 844 91.33 91.01 91.45 842 91.36 90.50 91.41 840 91.49 90.98 91.26 838 91.54 90.78 91.32 836 90.91 90.48 91.32 834 90.95 90.91 91.21 832 90.82 90.79 90.70 830 91.11 91.04 91.32 828 91.11 90.75 91.05 826 90.79 90.58 91.02 824 90.59 90.57 90.77 822 91.01 90.82 91.32 820 91.16 90.37 90.89 818 90.96 90.03 90.97 816 90.91 90.50 90.89 814 91.02 90.55 90.69 812 91.00 90.54 90.95 810 91.04 90.57 90.85 808 90.95 90.29 90.94 806 90.29 90.15 90.92 804 90.73 89.86 90.77 802 90.48 90.17 90.52 800 90.38 89.94 90.44 798 90.57 90.03 90.55 796 90.58 90.00 90.35 794 90.56 90.14 90.63 792 90.07 90.13 90.32 790 90.37 89.95 90.25 788 90.39 89.91 90.13 786 90.63 89.67 90.39 784 90.21 89.61 90.34 782 90.23 89.41 90.17 780 90.27 89.30 90.31 778 90.19 89.57 89.82 776 89.79 89.56 89.96 774 89.99 89.44 89.96 772 89.96 89.24 89.82 770 89.73 89.35 90.09 768 89.84 89.32 89.90 766 89.62 89.25 89.30 764 89.49 89.27 89.60 762 89.59 89.32 89.76 760 89.62 89.14 89.58 758 89.60 89.32 89.49 756 89.45 88.96 89.50 754 89.24 89.16 89.38 752 89.47 88.95 89.47 750 89.33 88.98 89.17 748 89.34 88.76 89.32 746 89.18 88.50 88.94 744 88.85 88.74 89.05 742 88.91 88.58 89.30 740 88.89 88.36 88.87 738 89.07 88.51 88.80 736 88.83 88.67 89.07 734 88.64 88.47 88.81 732 88.60 88.38 88.55 730 88.71 88.22 88.77 728 88.42 88.33 88.62 726 88.41 88.16 88.66 724 88.40 87.99 88.41 722 88.46 88.01 88.80 720 88.37 87.86 88.16 718 88.35 87.83 88.17 716 88.37 87.85 88.10 714 87.91 87.99 88.31 712 88.14 87.47 88.04 710 87.93 87.47 87.94 708 87.90 87.44 87.73 706 87.91 87.62 87.80 704 87.91 87.64 87.71 702 87.87 87.28 87.75 700 87.62 87.35 87.60 698 87.46 87.27 87.57 696 87.58 87.17 87.36 694 87.29 86.98 87.43 692 87.38 86.81 87.12 690 87.26 87.03 87.16 688 87.13 86.93 87.26 686 87.10 86.81 86.91 684 86.84 86.84 87.25 682 86.75 86.64 86.85 680 86.73 86.27 86.76 678 86.84 86.32 86.72 676 86.58 86.32 86.63 674 86.46 86.20 86.44 672 86.57 86.05 86.42 670 86.46 85.96 86.53 668 86.19 86.08 86.54 666 85.96 85.86 86.26 664 86.23 85.74 86.04 662 86.12 85.67 85.89 660 86.01 85.57 85.92 658 85.91 85.31 85.64 656 85.77 85.11 85.72 654 85.49 85.19 85.55 652 85.46 84.98 85.28 650 85.15 84.81 85.02 648 84.81 84.49 85.10 646 85.05 84.57 84.92 644 84.60 84.40 84.88 642 84.77 84.55 84.67 640 84.66 84.35 84.58 638 84.53 84.41 84.68 636 84.46 84.34 84.69 634 84.30 84.02 84.29 632 84.22 84.14 84.31 630 84.25 84.10 84.30 628 84.16 83.88 84.10 626 84.09 83.75 83.96 624 84.08 83.54 84.09 622 83.93 83.58 83.94 620 83.67 83.56 83.77 618 83.53 83.35 83.72 616 83.78 83.15 83.59 614 83.57 83.10 83.52 612 83.48 82.99 83.42 610 83.21 83.10 83.22 608 83.24 82.71 83.31 606 83.26 82.60 83.20 604 82.85 82.63 83.02 602 82.74 82.64 82.98 600 82.64 82.45 82.73 598 82.56 82.38 82.49 596 82.45 82.33 82.52 594 82.46 82.14 82.30 592 82.33 82.08 82.28 590 81.93 81.90 82.16 588 82.14 81.75 81.90 586 82.00 81.55 81.81 584 81.80 81.44 81.97 582 81.84 81.46 81.65 580 81.61 81.25 81.66 578 81.48 80.95 81.33 576 81.24 80.86 81.38 574 81.15 80.79 81.04 572 80.94 80.76 80.83 570 80.78 80.42 80.60 568 80.85 80.58 80.75 566 80.58 80.28 80.48 564 80.49 80.34 80.43 562 80.45 79.94 80.23 560 80.08 79.82 80.01 558 79.99 79.51 79.84 556 79.62 79.48 79.72 554 79.61 79.36 79.47 552 79.62 79.22 79.50 550 79.27 78.83 79.34 548 79.23 78.84 79.02 546 78.96 78.46 78.92 544 78.80 78.49 78.74 542 78.56 78.32 78.53 540 78.39 78.19 78.14 538 78.26 77.81 78.21 536 77.96 77.83 77.92 534 78.00 77.50 77.98 532 77.72 77.59 77.69 530 77.45 77.42 77.51 528 77.26 77.10 77.19 526 77.16 76.60 76.95 524 76.81 76.55 76.99 522 76.49 76.22 76.47 520 76.61 76.30 76.37 518 76.38 75.80 76.37 516 76.14 75.83 75.72 514 76.01 75.46 75.64 512 75.58 75.26 75.58 510 75.36 75.11 75.21 508 75.04 74.83 75.01 506 75.00 74.53 74.89 504 74.61 74.25 74.65 502 74.41 73.97 74.46 500 74.21 73.98 73.81 498 73.99 73.61 73.85 496 73.58 73.45 73.48 494 73.62 73.15 73.09 492 73.11 72.74 72.97 490 72.82 72.68 72.87 488 72.57 72.27 72.47 486 72.24 72.23 72.21 484 72.06 71.60 71.76 482 71.63 71.42 71.51 480 71.62 71.05 71.44 478 71.19 70.75 70.82 476 70.79 70.45 70.61 474 70.56 70.16 70.50 472 70.39 69.85 70.18 470 69.84 69.59 69.79 468 69.79 69.29 69.72 466 69.28 68.79 69.14 464 69.05 68.87 68.90 462 68.46 68.27 68.60 460 68.08 67.78 68.07 458 68.16 67.65 67.85 456 67.46 67.31 67.77 454 67.46 66.99 67.05 452 67.01 66.63 66.62 450 66.61 66.11 66.45 448 66.08 65.79 65.87 446 65.53 65.52 65.60 444 65.45 64.88 65.10 442 64.97 64.72 64.53 440 64.59 64.26 64.35 438 64.07 63.77 63.94 436 64.10 63.36 63.25 434 63.34 62.70 63.29 432 62.38 62.51 62.70 430 62.10 61.80 61.95 428 61.72 61.69 61.59 426 61.16 61.22 60.80 424 60.70 60.70 60.79 422 60.03 60.00 60.26 420 59.68 59.74 59.32 418 59.06 59.00 58.94 416 59.04 58.37 58.27 414 58.04 57.66 57.79 412 57.77 57.02 57.52 410 57.04 56.80 56.88 408 56.10 56.11 56.42 406 55.80 55.59 55.38 404 55.01 55.41 54.84 402 54.74 54.71 54.57 400 54.53 54.69 53.96 398 53.66 54.06 53.98 396 53.35 53.36 53.42 394 52.70 53.24 52.70 392 52.61 52.84 51.78 390 52.32 51.55 52.07 388 52.00 51.84 50.91 386 51.41 51.13 51.58 384 51.57 51.26 50.94 382 50.23 50.99 50.71 380 49.71 51.39 50.70 1650 95.24 94.88 95.11 1640 95.24 94.89 95.10 1630 95.22 94.89 95.09 1620 95.24 94.87 95.09 1610 95.23 94.86 95.08 1600 95.22 94.85 95.07 1590 95.21 94.86 95.07 1580 95.19 94.84 95.06 1570 95.20 94.83 95.05 1560 95.19 94.82 95.04 1550 95.18 94.82 95.04 1540 95.16 94.80 95.02 1530 95.16 94.79 95.02 1520 95.14 94.77 95.00 1510 95.13 94.76 94.99 1500 95.12 94.75 94.97 1490 95.12 94.74 94.96 1480 95.10 94.72 94.94 1470 95.09 94.70 94.94 1460 95.07 94.69 94.91 1450 95.06 94.68 94.90 1440 95.05 94.66 94.88 1430 95.03 94.65 94.87 1420 95.02 94.63 94.85 1410 95.00 94.62 94.83 1400 95.00 94.60 94.82 1390 94.98 94.57 94.81 1380 94.97 94.57 94.80 1370 94.95 94.55 94.77 1360 94.92 94.53 94.75 1350 94.90 94.50 94.72 1340 94.87 94.47 94.69 1330 94.85 94.44 94.67 1320 94.83 94.42 94.65 1310 94.80 94.40 94.63 1300 94.78 94.38 94.60 1290 94.76 94.34 94.57 1280 94.73 94.32 94.54 1270 94.71 94.28 94.52 1260 94.69 94.26 94.50 1250 94.66 94.24 94.47 1240 94.63 94.20 94.45 1230 94.60 94.17 94.41 1220 94.57 94.13 94.37 1210 94.54 94.10 94.35 1200 94.51 94.07 94.32 1190 94.47 94.03 94.28 1180 94.43 93.98 94.24 1170 94.40 93.94 94.21 1160 94.36 93.90 94.17 1150 94.31 93.85 94.13 1140 94.28 93.81 94.09 1130 94.24 93.77 94.06 1120 94.19 93.72 94.01 1110 94.15 93.66 93.96 1100 94.11 93.60 93.92 1090 94.05 93.56 93.86 1080 93.99 93.50 93.81 1070 93.93 93.44 93.77 1060 93.89 93.36 93.70 1050 93.83 93.32 93.65 1040 93.75 93.25 93.58 1030 93.69 93.17 93.53 1020 93.62 93.09 93.46 1010 93.56 93.02 93.40 1000 93.48 92.95 93.33 990 93.38 92.87 93.24 980 93.31 92.77 93.17 970 93.22 92.71 93.08 960 93.16 92.61 92.98 950 93.05 92.52 92.89