# 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 2022-10-06 (2850 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 91.42 91.34 90.64 998 90.96 90.83 91.12 996 91.64 89.72 89.94 994 91.86 91.09 91.26 992 91.15 91.75 91.13 990 91.33 90.90 91.14 988 91.04 91.12 91.30 986 91.34 92.02 91.07 984 90.74 89.79 90.86 982 91.40 90.69 91.07 980 91.94 91.06 91.16 978 91.73 91.22 91.33 976 91.62 91.58 90.85 974 92.05 91.09 90.92 972 91.38 90.58 90.90 970 92.37 90.95 90.83 968 91.41 91.43 90.99 966 91.80 91.25 91.24 964 90.91 91.01 90.98 962 90.66 91.07 91.63 960 90.96 90.95 90.87 958 91.45 90.61 91.21 956 91.67 90.68 91.10 954 91.73 91.00 90.14 952 91.82 90.35 90.97 950 91.49 91.42 90.80 948 91.44 90.64 90.15 946 91.47 90.48 90.95 944 91.53 90.70 90.44 942 91.20 90.56 91.42 940 91.07 90.74 91.25 938 91.14 90.75 91.00 936 91.57 90.65 90.66 934 91.19 90.95 90.82 932 90.97 91.24 90.75 930 91.01 91.27 90.72 928 91.50 90.30 91.01 926 90.88 90.79 90.26 924 91.27 90.40 91.64 922 90.99 90.62 90.43 920 91.34 90.46 90.90 918 90.84 90.79 90.81 916 90.87 90.66 90.53 914 91.34 90.43 90.65 912 91.40 90.31 90.69 910 91.25 90.64 90.90 908 91.02 90.90 90.64 906 90.69 90.81 90.84 904 90.99 90.19 90.29 902 90.92 90.06 90.47 900 90.50 90.21 90.32 898 91.17 90.33 90.53 896 90.67 90.30 90.49 894 90.90 90.18 90.59 892 90.83 90.22 90.44 890 90.91 89.97 90.26 888 90.38 90.27 90.04 886 90.56 90.00 90.13 884 90.77 89.77 90.33 882 90.55 90.19 90.14 880 90.43 90.09 89.83 878 90.08 89.71 90.28 876 90.45 89.93 90.09 874 90.33 90.41 89.96 872 90.45 90.13 90.08 870 90.68 89.86 90.31 868 90.46 89.77 90.41 866 90.26 90.04 90.01 864 90.36 90.08 89.58 862 90.29 90.23 89.86 860 90.20 89.52 89.90 858 90.38 89.54 89.86 856 90.42 89.46 89.37 854 90.44 89.87 89.82 852 90.37 89.63 89.82 850 89.89 89.62 89.88 848 90.12 89.59 89.47 846 89.64 89.19 89.51 844 89.74 89.73 89.18 842 89.40 89.62 89.05 840 90.12 89.53 89.26 838 90.04 89.76 89.13 836 89.88 89.30 89.39 834 90.08 89.16 89.68 832 89.63 89.10 89.21 830 89.59 89.30 89.45 828 89.71 89.26 89.07 826 89.40 88.94 89.14 824 89.44 88.71 88.87 822 89.45 89.23 89.21 820 89.69 89.10 89.18 818 89.71 88.72 89.21 816 89.73 88.44 89.25 814 89.28 88.84 88.98 812 89.34 88.89 88.75 810 88.98 88.72 88.81 808 89.11 89.05 88.86 806 89.24 88.48 88.36 804 88.81 88.41 89.00 802 88.94 88.54 88.79 800 88.90 88.69 88.26 798 88.78 88.27 88.53 796 88.99 88.54 88.67 794 88.91 88.37 88.32 792 88.52 88.54 88.53 790 88.60 88.45 88.22 788 89.18 88.06 88.25 786 88.74 88.07 87.98 784 88.64 87.61 88.08 782 88.13 88.21 88.05 780 88.48 88.24 87.58 778 88.10 87.74 87.90 776 88.44 87.62 87.72 774 88.31 88.00 87.86 772 88.28 87.92 87.72 770 88.34 87.60 87.61 768 88.15 87.67 87.14 766 88.12 87.69 87.51 764 88.24 87.52 87.75 762 87.90 87.34 87.61 760 87.91 87.41 87.17 758 88.03 87.54 87.31 756 87.95 87.20 87.38 754 87.59 87.35 87.23 752 87.67 87.27 87.05 750 87.78 86.93 87.06 748 87.36 86.96 86.91 746 87.47 87.12 86.93 744 87.49 86.96 87.12 742 87.30 86.52 86.49 740 87.17 86.50 86.43 738 87.13 86.53 86.69 736 86.95 86.82 86.51 734 87.00 86.52 86.78 732 87.01 86.36 86.44 730 87.13 86.47 86.28 728 86.99 86.55 86.33 726 86.67 85.94 86.41 724 86.64 86.11 85.99 722 86.54 86.05 86.42 720 86.65 85.93 86.09 718 86.53 85.86 85.56 716 86.77 85.56 85.78 714 86.41 85.88 85.76 712 86.52 85.65 85.63 710 86.21 85.64 85.45 708 86.11 85.87 85.56 706 85.84 85.58 85.49 704 86.29 85.36 85.39 702 85.67 85.42 85.20 700 85.78 85.28 85.29 698 85.71 85.06 85.30 696 85.86 85.06 84.88 694 85.74 84.91 85.12 692 85.27 84.88 84.73 690 85.15 84.74 84.84 688 85.60 84.57 84.60 686 85.29 84.56 84.43 684 85.20 84.63 84.43 682 85.48 84.43 84.50 680 85.04 83.96 84.36 678 84.86 84.11 84.08 676 84.95 84.17 83.99 674 84.90 84.09 84.01 672 84.74 84.10 83.89 670 84.57 84.06 84.04 668 84.33 83.74 83.60 666 84.58 83.79 83.60 664 84.29 83.82 83.36 662 84.34 83.55 83.55 660 84.01 83.31 83.42 658 83.99 83.14 83.30 656 83.80 83.28 82.97 654 83.75 82.92 82.88 652 83.46 83.06 82.72 650 83.18 82.63 82.59 648 83.21 82.46 82.33 646 83.07 82.26 82.34 644 83.06 82.28 82.04 642 82.85 82.20 82.17 640 82.80 82.11 82.05 638 82.82 81.93 81.96 636 82.68 81.92 81.77 634 82.51 81.73 81.75 632 82.65 81.66 81.62 630 82.51 81.51 81.26 628 82.26 81.41 81.32 626 82.18 81.34 81.29 624 82.06 81.37 81.20 622 82.03 81.03 81.25 620 81.85 81.03 81.00 618 81.96 80.98 80.88 616 81.72 80.90 80.76 614 81.66 80.78 80.66 612 81.61 80.54 80.56 610 81.45 80.68 80.60 608 81.19 80.52 80.45 606 81.09 80.36 80.32 604 81.05 80.25 80.09 602 81.15 80.22 79.94 600 80.89 79.96 79.94 598 80.84 79.93 79.86 596 80.47 79.74 79.50 594 80.44 79.63 79.46 592 80.42 79.52 79.46 590 80.24 79.40 79.25 588 80.04 79.18 79.01 586 80.01 79.19 79.01 584 79.90 78.99 78.80 582 79.59 78.74 78.65 580 79.60 78.82 78.61 578 79.27 78.59 78.58 576 79.28 78.38 78.37 574 79.29 78.43 78.30 572 79.03 78.02 77.94 570 78.84 78.34 77.78 568 78.65 77.96 77.58 566 78.52 77.68 77.51 564 78.54 77.44 77.31 562 78.12 77.27 77.20 560 78.16 77.20 76.80 558 77.97 76.91 76.83 556 77.81 76.77 76.59 554 77.48 76.77 76.51 552 77.25 76.49 76.07 550 77.16 76.32 76.03 548 77.08 76.34 76.05 546 77.04 76.11 75.72 544 76.84 75.77 75.58 542 76.62 75.67 75.53 540 76.24 75.43 75.30 538 76.09 75.16 74.96 536 75.77 75.07 74.82 534 75.58 74.88 74.47 532 75.53 74.52 74.46 530 75.40 74.41 74.33 528 75.17 74.29 74.06 526 74.84 73.94 73.90 524 74.81 73.76 73.59 522 74.43 73.58 73.03 520 74.36 73.36 72.95 518 73.97 73.05 72.83 516 73.64 72.78 72.59 514 73.57 72.48 72.31 512 73.46 72.51 71.96 510 73.15 72.00 71.88 508 72.92 71.95 71.34 506 72.55 71.46 71.27 504 72.34 71.30 71.24 502 72.09 71.24 70.75 500 71.93 70.98 70.48 498 71.45 70.38 70.37 496 71.38 70.39 70.10 494 71.21 70.07 69.65 492 70.59 69.88 69.43 490 70.61 69.49 69.32 488 70.25 69.38 68.76 486 69.96 68.86 68.52 484 69.72 68.59 68.43 482 69.23 68.16 68.13 480 69.23 67.94 67.76 478 68.69 67.80 67.01 476 68.29 67.43 66.93 474 68.18 67.16 66.78 472 67.84 66.85 66.66 470 67.61 66.46 66.00 468 66.82 66.35 65.40 466 66.88 65.55 65.25 464 66.58 65.54 64.71 462 65.94 64.91 64.47 460 65.52 64.63 64.32 458 65.35 64.45 63.94 456 64.86 63.72 63.40 454 64.38 63.57 63.11 452 64.21 63.06 62.55 450 63.75 62.55 62.14 448 63.05 62.61 61.63 446 62.60 62.22 61.08 444 62.70 61.48 60.75 442 62.12 61.25 60.44 440 61.59 61.01 59.89 438 60.99 60.12 59.62 436 60.63 59.76 59.18 434 60.07 59.57 58.62 432 59.39 59.26 57.84 430 59.09 58.40 57.82 428 58.75 57.89 57.13 426 58.66 57.61 56.72 424 57.55 56.77 55.89 422 57.12 56.22 55.62 420 56.50 55.69 54.68 418 55.85 54.67 54.18 416 55.51 54.82 53.85 414 54.61 53.89 53.29 412 54.22 53.67 52.64 410 53.63 52.78 52.32 408 53.64 52.98 51.34 406 52.99 52.02 50.89 404 52.24 51.25 50.71 402 51.77 50.98 49.84 400 51.42 50.56 49.93 398 50.36 50.07 49.03 396 51.05 49.79 48.58 394 49.85 50.16 48.80 392 49.05 48.71 47.38 390 48.96 48.79 48.02 388 48.76 48.42 47.21 386 48.97 48.42 46.98 384 48.54 48.06 46.72 382 48.90 48.67 46.32 380 47.89 47.28 46.60 1650 93.96 93.74 93.89 1640 93.93 93.72 93.89 1630 93.95 93.72 93.89 1620 93.93 93.71 93.89 1610 93.91 93.70 93.88 1600 93.91 93.69 93.86 1590 93.92 93.68 93.86 1580 93.90 93.68 93.83 1570 93.88 93.66 93.84 1560 93.89 93.67 93.82 1550 93.87 93.64 93.82 1540 93.87 93.63 93.79 1530 93.85 93.62 93.79 1520 93.85 93.60 93.77 1510 93.82 93.59 93.78 1500 93.81 93.59 93.75 1490 93.80 93.58 93.74 1480 93.79 93.57 93.72 1470 93.77 93.54 93.71 1460 93.77 93.53 93.69 1450 93.74 93.51 93.68 1440 93.73 93.50 93.67 1430 93.73 93.48 93.64 1420 93.69 93.46 93.64 1410 93.70 93.45 93.62 1400 93.69 93.44 93.61 1390 93.67 93.42 93.60 1380 93.67 93.41 93.56 1370 93.64 93.38 93.56 1360 93.60 93.36 93.53 1350 93.57 93.31 93.47 1340 93.53 93.28 93.45 1330 93.52 93.25 93.42 1320 93.50 93.22 93.40 1310 93.46 93.19 93.36 1300 93.44 93.17 93.34 1290 93.41 93.14 93.29 1280 93.37 93.10 93.27 1270 93.36 93.08 93.24 1260 93.33 93.04 93.20 1250 93.28 93.01 93.17 1240 93.26 92.97 93.14 1230 93.23 92.94 93.10 1220 93.18 92.89 93.07 1210 93.16 92.86 93.02 1200 93.13 92.83 92.98 1190 93.08 92.78 92.94 1180 93.03 92.72 92.89 1170 93.00 92.69 92.85 1160 92.96 92.64 92.79 1150 92.92 92.60 92.76 1140 92.87 92.56 92.72 1130 92.84 92.51 92.67 1120 92.78 92.46 92.62 1110 92.73 92.40 92.57 1100 92.69 92.34 92.52 1090 92.63 92.29 92.45 1080 92.58 92.22 92.40 1070 92.51 92.16 92.32 1060 92.45 92.09 92.26 1050 92.39 92.03 92.21 1040 92.33 91.96 92.14 1030 92.26 91.88 92.06 1020 92.17 91.80 91.98 1010 92.10 91.71 91.92 1000 92.05 91.63 91.82 990 91.95 91.56 91.75 980 91.86 91.45 91.64 970 91.75 91.35 91.53 960 91.65 91.23 91.44 950 91.55 91.15 91.33