# 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 2023-07-13 (3130 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 91.06 90.30 89.62 998 91.21 90.12 89.53 996 91.58 90.48 90.06 994 90.66 89.70 90.15 992 90.61 91.29 90.31 990 90.83 91.85 90.22 988 90.85 91.45 90.09 986 90.67 91.40 90.15 984 90.51 91.03 90.85 982 90.43 90.93 90.04 980 91.37 90.78 90.44 978 91.14 91.28 90.49 976 90.92 89.85 90.04 974 90.12 89.83 90.65 972 90.85 90.69 90.75 970 90.71 90.08 90.59 968 90.71 90.38 90.01 966 90.55 90.63 90.41 964 90.27 90.50 90.08 962 90.93 90.81 90.69 960 90.67 90.47 90.34 958 91.36 91.04 90.70 956 90.76 90.28 90.54 954 90.73 90.48 90.37 952 91.22 90.51 90.63 950 90.79 90.64 90.37 948 90.53 90.88 90.28 946 90.51 91.15 90.24 944 90.51 90.52 90.10 942 90.39 90.24 90.27 940 90.72 90.67 89.86 938 91.08 90.52 91.00 936 90.68 90.64 90.31 934 90.43 90.26 90.18 932 90.70 90.36 89.86 930 90.47 90.20 90.08 928 90.95 90.20 90.43 926 90.66 90.07 90.39 924 90.78 90.62 90.27 922 90.59 90.72 90.43 920 89.89 90.18 90.05 918 90.54 89.96 89.88 916 90.22 90.53 89.79 914 90.30 89.93 90.01 912 90.41 90.04 90.21 910 90.83 89.87 89.80 908 90.45 90.51 90.16 906 90.37 90.15 90.06 904 90.20 89.80 89.85 902 90.18 90.20 89.89 900 90.34 90.14 90.21 898 90.28 89.86 89.76 896 90.26 90.08 89.69 894 90.30 89.91 89.68 892 90.25 90.09 89.59 890 90.44 89.80 89.83 888 90.25 89.77 89.66 886 89.90 90.16 89.60 884 89.83 89.78 89.81 882 89.98 89.98 89.18 880 90.47 89.78 89.39 878 89.64 89.94 89.82 876 90.00 89.35 89.17 874 89.86 89.57 89.68 872 89.96 89.55 89.57 870 89.90 89.54 89.52 868 89.74 89.47 89.51 866 90.01 89.76 89.58 864 89.62 89.14 89.19 862 89.54 89.45 89.15 860 89.57 89.34 89.42 858 89.52 89.34 88.98 856 89.79 89.25 89.38 854 89.77 89.37 88.76 852 89.65 89.42 88.84 850 89.65 88.92 88.89 848 89.35 89.46 88.73 846 89.56 89.26 88.85 844 89.38 89.41 89.16 842 89.33 89.04 89.15 840 89.21 88.82 89.05 838 89.21 88.86 88.64 836 89.19 88.76 89.07 834 89.13 88.78 88.80 832 89.00 89.00 88.68 830 89.13 88.73 88.70 828 89.07 88.64 88.46 826 89.30 89.00 88.39 824 88.89 88.61 88.06 822 89.07 88.22 88.43 820 88.53 88.58 88.37 818 88.49 88.66 88.29 816 88.88 88.71 88.40 814 89.16 88.82 88.11 812 88.47 88.27 87.76 810 88.76 88.34 88.08 808 88.64 88.37 88.25 806 88.64 88.35 88.13 804 88.70 88.34 88.19 802 88.58 87.96 87.65 800 88.26 88.27 87.88 798 88.20 88.11 87.79 796 88.01 87.73 88.01 794 88.43 87.98 87.88 792 88.14 88.05 87.55 790 88.13 87.84 87.53 788 87.78 87.74 87.65 786 87.89 87.66 87.55 784 88.15 88.02 87.36 782 87.51 87.72 87.39 780 88.03 87.14 87.54 778 87.92 87.71 87.20 776 87.49 87.37 87.32 774 87.69 87.50 87.21 772 87.49 87.13 87.09 770 87.66 87.36 87.13 768 87.46 87.05 86.76 766 87.38 87.00 86.91 764 87.62 87.01 86.76 762 87.63 87.20 86.69 760 87.32 86.95 86.99 758 87.07 86.96 86.46 756 87.56 86.91 86.82 754 87.13 86.68 86.72 752 87.07 86.70 86.62 750 86.80 86.73 86.27 748 86.75 86.74 86.05 746 86.70 86.57 86.09 744 86.67 86.51 86.10 742 86.50 86.37 85.93 740 86.62 86.27 85.84 738 86.20 86.18 86.04 736 86.45 86.01 86.04 734 86.07 86.18 85.88 732 86.07 86.07 85.59 730 86.28 85.98 85.42 728 86.05 85.85 85.64 726 85.85 86.02 85.27 724 86.05 85.64 85.43 722 86.00 85.72 85.39 720 85.87 85.71 85.42 718 85.87 85.34 85.15 716 85.47 85.30 84.91 714 85.59 85.39 85.24 712 85.62 85.48 84.81 710 85.54 85.13 84.70 708 85.54 85.12 84.74 706 85.36 85.15 84.80 704 85.07 84.83 84.60 702 85.09 84.63 84.46 700 84.93 84.87 84.33 698 84.91 84.82 84.26 696 84.80 84.49 84.46 694 84.82 84.51 84.12 692 84.51 84.56 84.00 690 84.87 84.26 83.88 688 84.52 84.32 83.94 686 84.44 84.30 83.81 684 84.30 84.16 83.79 682 84.21 84.01 83.54 680 84.13 83.92 83.58 678 84.07 83.65 83.42 676 83.95 83.79 83.34 674 83.80 83.50 83.25 672 84.00 83.62 83.34 670 83.73 83.49 82.82 668 83.56 83.45 82.81 666 83.26 83.22 82.76 664 83.49 83.05 82.70 662 83.29 83.03 82.42 660 83.10 83.03 82.27 658 83.02 82.84 82.27 656 83.02 82.72 82.05 654 82.71 82.48 82.22 652 82.72 82.34 81.73 650 82.37 82.22 81.58 648 82.08 81.89 81.54 646 82.17 81.73 81.53 644 81.91 81.71 81.32 642 81.71 81.68 80.97 640 81.69 81.38 81.00 638 81.71 81.25 80.88 636 81.71 81.21 80.66 634 81.42 81.41 80.86 632 81.27 81.29 80.61 630 81.35 80.91 80.58 628 81.22 81.06 80.58 626 81.10 80.65 80.38 624 81.02 80.90 80.36 622 80.93 80.75 80.16 620 80.81 80.70 80.17 618 80.66 80.55 79.93 616 80.53 80.46 79.84 614 80.38 80.22 79.67 612 80.38 80.36 79.51 610 80.35 79.96 79.46 608 80.03 79.86 79.57 606 80.09 79.85 79.43 604 79.77 79.83 79.37 602 79.56 79.55 79.07 600 79.66 79.21 78.85 598 79.53 79.47 78.76 596 79.32 79.16 78.74 594 79.24 79.11 78.60 592 79.26 78.78 78.52 590 78.97 78.75 78.24 588 78.96 78.77 78.20 586 78.48 78.70 77.98 584 78.51 78.09 77.43 582 78.37 78.13 77.66 580 78.31 78.02 77.51 578 77.97 77.98 77.25 576 77.84 77.84 77.15 574 77.79 77.62 77.01 572 77.65 77.60 76.84 570 77.32 77.11 76.82 568 77.17 77.13 76.68 566 77.18 76.85 76.51 564 76.90 76.77 76.32 562 76.60 76.58 75.88 560 76.45 76.37 76.04 558 76.21 76.25 75.86 556 76.09 76.00 75.53 554 75.94 75.84 75.32 552 75.94 75.57 75.26 550 75.64 75.69 74.94 548 75.46 75.34 74.98 546 75.20 74.99 74.67 544 75.07 75.08 74.49 542 74.88 74.82 74.34 540 74.64 74.40 74.11 538 74.57 74.43 73.91 536 74.16 74.15 73.62 534 74.15 73.95 73.35 532 73.95 73.73 73.33 530 73.60 73.64 72.96 528 73.24 73.29 72.81 526 73.18 73.23 72.49 524 72.96 72.96 72.34 522 72.73 72.52 72.08 520 72.44 72.55 72.02 518 72.27 72.37 71.82 516 71.92 71.99 71.56 514 71.67 71.61 71.11 512 71.45 71.25 70.88 510 71.09 71.08 70.71 508 70.86 71.10 70.37 506 70.70 70.70 70.26 504 70.50 70.56 69.89 502 70.22 70.30 69.67 500 69.76 70.02 69.17 498 69.75 69.56 68.94 496 69.25 69.41 68.82 494 68.82 68.86 68.41 492 68.73 68.86 68.11 490 68.62 68.40 67.99 488 68.26 68.16 67.51 486 67.55 67.78 67.22 484 67.49 67.67 66.89 482 67.23 67.25 66.70 480 66.84 67.03 66.40 478 66.47 66.75 66.08 476 66.11 66.13 65.73 474 65.77 65.94 65.34 472 65.38 65.63 64.84 470 64.93 65.29 64.74 468 64.87 65.02 64.09 466 64.42 64.56 63.65 464 64.08 64.03 63.72 462 63.81 64.10 62.93 460 63.43 63.28 62.67 458 62.80 63.04 62.30 456 62.26 62.52 61.91 454 62.08 62.11 61.66 452 61.40 61.91 60.93 450 61.00 61.47 60.70 448 60.96 60.58 60.10 446 60.41 60.65 59.92 444 59.91 60.34 59.20 442 59.72 60.21 58.79 440 58.99 59.34 58.46 438 58.65 58.63 58.03 436 57.65 58.53 57.19 434 57.28 57.93 56.83 432 56.65 56.88 56.08 430 56.34 56.73 55.35 428 56.02 56.62 55.22 426 54.88 55.87 54.76 424 54.69 55.60 54.18 422 53.77 54.78 53.39 420 53.14 53.87 52.55 418 53.04 54.01 52.69 416 52.23 52.68 52.07 414 51.89 52.20 50.99 412 51.30 51.51 50.79 410 51.00 50.81 50.25 408 50.12 50.52 49.66 406 49.52 50.38 48.81 404 48.87 49.54 48.54 402 48.83 49.55 47.86 400 48.06 48.77 47.52 398 47.83 47.88 47.60 396 47.80 47.59 46.38 394 47.43 47.81 46.55 392 47.15 47.10 46.01 390 46.96 46.72 45.55 388 45.60 46.35 45.33 386 45.84 46.77 45.06 384 45.61 46.57 45.24 382 44.88 45.15 44.76 380 45.15 45.47 44.53 1650 93.71 93.48 93.41 1640 93.70 93.50 93.40 1630 93.71 93.48 93.40 1620 93.70 93.48 93.39 1610 93.68 93.47 93.38 1600 93.68 93.46 93.36 1590 93.65 93.44 93.35 1580 93.66 93.44 93.33 1570 93.64 93.42 93.34 1560 93.63 93.41 93.32 1550 93.60 93.37 93.30 1540 93.60 93.37 93.28 1530 93.58 93.36 93.26 1520 93.57 93.35 93.24 1510 93.55 93.35 93.25 1500 93.54 93.32 93.22 1490 93.52 93.29 93.21 1480 93.50 93.28 93.18 1470 93.49 93.25 93.17 1460 93.47 93.24 93.13 1450 93.45 93.23 93.12 1440 93.43 93.20 93.09 1430 93.41 93.19 93.08 1420 93.39 93.15 93.06 1410 93.38 93.14 93.03 1400 93.35 93.13 93.01 1390 93.33 93.11 92.98 1380 93.30 93.07 92.96 1370 93.29 93.06 92.94 1360 93.28 93.04 92.91 1350 93.24 93.01 92.88 1340 93.22 92.98 92.84 1330 93.19 92.95 92.83 1320 93.16 92.93 92.79 1310 93.14 92.90 92.77 1300 93.12 92.86 92.73 1290 93.07 92.83 92.70 1280 93.06 92.81 92.67 1270 93.02 92.77 92.64 1260 92.99 92.74 92.60 1250 92.97 92.70 92.56 1240 92.94 92.67 92.52 1230 92.90 92.64 92.48 1220 92.86 92.61 92.44 1210 92.82 92.56 92.40 1200 92.79 92.52 92.35 1190 92.75 92.49 92.30 1180 92.70 92.42 92.26 1170 92.66 92.38 92.22 1160 92.62 92.33 92.17 1150 92.57 92.29 92.13 1140 92.53 92.24 92.08 1130 92.47 92.19 92.03 1120 92.42 92.14 91.97 1110 92.38 92.09 91.91 1100 92.31 92.02 91.87 1090 92.26 91.96 91.79 1080 92.20 91.91 91.72 1070 92.12 91.84 91.65 1060 92.08 91.77 91.58 1050 91.99 91.70 91.52 1040 91.93 91.62 91.44 1030 91.86 91.54 91.35 1020 91.78 91.46 91.27 1010 91.70 91.38 91.20 1000 91.61 91.29 91.11 990 91.52 91.20 91.01 980 91.42 91.11 90.91 970 91.33 91.01 90.82 960 91.22 90.90 90.71 950 91.12 90.78 90.59