# 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 2024-03-06 (3367 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 90.16 88.63 89.61 998 90.54 90.02 89.89 996 89.55 90.31 89.35 994 90.01 90.77 89.72 992 90.58 90.44 89.96 990 91.18 89.61 89.90 988 90.34 89.96 90.03 986 90.33 90.48 90.10 984 90.73 89.87 89.19 982 90.48 90.19 89.78 980 91.15 90.09 90.42 978 89.76 90.02 90.38 976 89.83 89.96 89.89 974 90.39 90.10 89.58 972 89.59 89.84 89.89 970 90.43 90.00 89.84 968 90.22 90.76 89.29 966 90.31 90.04 89.95 964 90.52 89.74 89.45 962 90.67 89.50 88.71 960 90.09 89.21 90.14 958 90.36 89.80 89.90 956 90.24 89.86 89.40 954 89.24 90.32 89.97 952 90.59 90.20 89.39 950 90.64 90.19 89.59 948 90.20 89.96 89.51 946 89.80 89.68 89.67 944 90.49 89.85 89.66 942 90.01 89.93 89.50 940 90.42 89.99 89.89 938 90.44 90.13 89.53 936 90.27 89.29 89.86 934 89.95 90.08 89.94 932 90.44 89.97 89.91 930 90.76 89.86 89.98 928 89.99 89.59 89.48 926 90.48 89.53 89.80 924 89.75 89.89 89.49 922 90.48 89.47 89.77 920 90.09 90.12 89.42 918 89.86 89.72 89.47 916 89.96 89.75 89.37 914 90.15 89.51 89.25 912 89.75 89.67 88.97 910 89.62 89.75 88.98 908 89.69 89.47 89.14 906 90.03 89.57 89.39 904 89.75 89.22 89.21 902 89.57 89.33 89.75 900 90.11 89.33 89.11 898 89.44 88.92 89.17 896 89.99 89.25 89.03 894 89.85 89.02 89.34 892 90.02 89.46 88.94 890 89.67 89.06 88.49 888 89.80 89.19 88.60 886 89.02 89.39 88.87 884 89.20 88.53 89.05 882 89.52 89.19 88.83 880 89.40 88.99 88.57 878 89.29 89.03 88.74 876 89.23 89.11 88.89 874 89.81 88.91 88.70 872 89.84 89.40 88.88 870 89.27 88.68 88.58 868 89.47 88.37 88.32 866 89.32 88.77 88.46 864 89.15 88.93 88.36 862 89.06 88.64 88.34 860 89.09 88.67 88.70 858 88.91 88.69 88.39 856 89.01 88.09 88.38 854 88.72 88.21 88.20 852 88.75 88.11 88.07 850 88.71 88.31 88.25 848 88.54 88.29 88.17 846 88.81 88.68 88.10 844 89.01 88.27 88.17 842 88.69 88.65 87.96 840 88.47 88.73 88.10 838 88.55 88.29 87.89 836 88.92 87.78 87.49 834 88.71 87.98 88.01 832 88.02 88.12 87.71 830 88.60 87.97 87.64 828 88.48 87.86 87.76 826 88.03 88.37 88.25 824 88.43 88.07 87.93 822 88.41 87.69 87.87 820 88.05 87.60 87.60 818 88.06 87.48 87.53 816 88.03 87.60 87.49 814 88.10 87.90 87.66 812 87.77 87.51 87.39 810 87.87 87.57 87.19 808 87.77 87.49 87.53 806 87.92 87.38 87.23 804 87.50 87.41 87.44 802 87.74 87.21 87.13 800 87.56 87.64 87.24 798 87.38 86.88 87.25 796 87.41 87.46 86.66 794 87.58 87.41 86.72 792 87.21 87.05 86.59 790 87.20 87.09 87.16 788 87.40 86.73 86.54 786 86.98 86.87 86.69 784 87.22 86.97 86.48 782 87.46 86.75 86.43 780 87.37 86.78 86.31 778 87.17 86.83 86.57 776 87.06 86.92 86.54 774 87.18 86.44 86.24 772 87.20 86.71 86.23 770 86.86 86.59 86.15 768 86.68 86.81 86.07 766 86.67 86.29 85.93 764 86.54 86.21 85.91 762 86.60 85.95 85.88 760 86.32 86.02 85.79 758 86.57 86.11 85.79 756 86.36 86.10 85.68 754 86.27 85.79 85.71 752 86.00 85.82 85.34 750 86.19 85.76 85.47 748 86.15 85.97 85.34 746 85.97 85.85 85.64 744 85.95 85.57 85.45 742 85.94 85.42 85.16 740 86.02 85.57 85.25 738 85.67 85.63 85.28 736 85.73 85.29 84.81 734 85.59 85.29 84.92 732 85.27 85.29 84.93 730 85.26 85.33 84.78 728 85.55 85.02 84.85 726 85.27 85.05 84.67 724 84.86 85.09 84.70 722 84.91 84.85 84.44 720 84.97 84.79 84.41 718 85.15 84.63 84.31 716 84.81 84.83 84.29 714 84.83 84.17 84.41 712 84.90 84.63 84.05 710 84.81 84.32 84.04 708 84.36 84.29 83.71 706 84.58 84.01 83.91 704 84.45 84.20 83.85 702 84.23 84.11 83.65 700 84.15 83.86 83.56 698 84.34 83.85 83.64 696 84.06 83.96 83.19 694 83.95 83.84 83.33 692 83.97 83.72 83.13 690 83.56 83.31 82.96 688 83.59 83.37 82.90 686 83.54 83.33 82.87 684 83.52 83.26 82.84 682 83.53 83.06 82.54 680 83.18 82.98 82.74 678 83.19 82.72 82.58 676 82.74 82.81 82.45 674 82.93 82.57 82.30 672 82.79 82.48 82.07 670 82.81 82.35 81.95 668 82.42 82.46 81.89 666 82.61 82.23 81.77 664 82.45 81.92 81.80 662 82.41 82.00 81.55 660 82.15 81.99 81.43 658 82.08 81.78 81.48 656 81.92 81.63 81.23 654 81.78 81.54 81.07 652 81.29 81.17 80.82 650 81.24 81.00 80.81 648 81.11 80.76 80.45 646 80.90 80.83 80.32 644 80.85 80.68 80.33 642 80.85 80.67 80.15 640 80.88 80.24 80.13 638 80.68 80.36 79.93 636 80.57 80.27 79.91 634 80.29 80.13 79.60 632 80.12 80.03 79.61 630 80.19 79.79 79.63 628 79.90 79.89 79.31 626 80.03 79.73 79.39 624 79.84 79.44 79.23 622 79.93 79.62 79.16 620 79.61 79.43 78.99 618 79.54 79.27 78.82 616 79.39 79.14 78.72 614 79.17 78.80 78.52 612 79.21 78.96 78.47 610 79.14 78.83 78.39 608 78.88 78.68 78.40 606 78.71 78.43 78.28 604 78.57 78.23 77.87 602 78.52 78.13 78.00 600 78.34 78.12 77.69 598 78.19 78.09 77.71 596 78.22 77.75 77.60 594 78.03 77.53 77.27 592 77.73 77.72 77.41 590 77.71 77.49 77.34 588 77.54 77.30 76.80 586 77.39 77.11 76.80 584 77.37 77.21 76.63 582 76.94 76.76 76.48 580 77.18 76.59 76.25 578 76.57 76.50 75.99 576 76.47 76.37 76.14 574 76.57 76.18 75.81 572 76.45 75.97 75.65 570 76.17 75.92 75.55 568 75.85 75.58 75.15 566 75.77 75.44 75.34 564 75.57 75.42 74.94 562 75.54 75.02 74.92 560 75.34 74.83 74.44 558 75.24 74.84 74.47 556 74.83 74.63 74.21 554 74.77 74.44 74.01 552 74.61 74.12 73.98 550 74.24 73.98 73.76 548 74.16 73.77 73.61 546 73.94 73.40 73.24 544 73.89 73.34 73.12 542 73.58 73.16 72.82 540 73.32 72.86 72.55 538 73.33 72.65 72.50 536 72.93 72.68 72.12 534 72.60 72.21 72.00 532 72.47 71.94 71.78 530 72.18 71.92 71.54 528 72.13 71.31 71.19 526 71.85 71.41 71.12 524 71.66 70.99 70.81 522 71.32 70.65 70.83 520 71.01 70.38 70.27 518 70.81 70.05 70.11 516 70.57 69.99 70.18 514 70.18 69.66 69.58 512 70.13 69.50 69.17 510 69.66 69.17 69.17 508 69.39 68.76 68.77 506 69.22 68.69 68.64 504 68.85 68.36 68.22 502 68.61 67.96 67.84 500 68.45 67.52 67.56 498 67.93 67.28 67.26 496 67.91 67.00 67.11 494 67.50 66.64 66.80 492 67.09 66.55 66.48 490 67.04 65.90 66.21 488 66.66 66.03 65.93 486 66.09 65.40 65.20 484 65.88 65.08 65.37 482 65.72 64.71 64.95 480 65.10 64.48 64.70 478 64.97 64.37 64.35 476 64.55 63.64 63.86 474 64.13 63.44 63.54 472 63.71 62.96 63.10 470 63.44 62.40 62.90 468 62.99 62.26 62.64 466 62.66 61.91 62.08 464 62.32 61.32 61.68 462 62.03 61.14 61.12 460 61.53 60.61 60.48 458 61.13 60.08 60.45 456 60.61 59.88 60.18 454 60.47 59.19 59.73 452 60.04 59.06 59.19 450 59.33 58.60 58.95 448 58.75 58.11 58.48 446 58.70 57.67 57.72 444 58.15 57.07 57.60 442 57.61 56.58 57.00 440 57.02 56.08 56.41 438 56.62 55.33 55.92 436 55.88 55.08 55.34 434 55.47 54.45 54.88 432 54.73 53.87 53.84 430 54.33 53.15 53.80 428 53.97 52.80 53.00 426 53.14 52.32 52.88 424 52.96 51.43 52.15 422 52.52 51.05 51.44 420 51.69 50.86 50.91 418 51.09 50.12 50.51 416 50.82 49.11 50.09 414 50.26 48.06 48.94 412 49.38 48.29 48.60 410 48.55 47.80 48.02 408 48.24 46.79 47.66 406 47.40 46.46 47.00 404 47.49 45.61 46.89 402 46.99 45.44 45.90 400 46.74 45.55 45.31 398 46.68 44.83 45.14 396 45.14 44.73 45.16 394 45.44 43.79 44.12 392 45.01 43.75 44.52 390 44.24 44.03 44.45 388 44.21 43.11 43.44 386 44.64 42.28 43.44 384 43.40 41.93 43.00 382 42.78 42.69 43.32 380 43.81 41.87 43.02 1650 93.61 93.12 93.11 1640 93.60 93.11 93.08 1630 93.60 93.11 93.09 1620 93.58 93.10 93.09 1610 93.58 93.08 93.09 1600 93.57 93.08 93.08 1590 93.56 93.06 93.06 1580 93.54 93.05 93.04 1570 93.54 93.05 93.02 1560 93.52 93.03 93.02 1550 93.51 93.00 92.99 1540 93.49 93.00 92.99 1530 93.48 92.98 92.97 1520 93.46 92.96 92.97 1510 93.45 92.94 92.93 1500 93.43 92.93 92.92 1490 93.41 92.91 92.90 1480 93.40 92.89 92.90 1470 93.37 92.87 92.87 1460 93.35 92.86 92.85 1450 93.34 92.84 92.83 1440 93.32 92.82 92.81 1430 93.29 92.80 92.78 1420 93.26 92.76 92.76 1410 93.24 92.75 92.74 1400 93.23 92.72 92.71 1390 93.20 92.70 92.69 1380 93.18 92.67 92.66 1370 93.15 92.65 92.63 1360 93.12 92.62 92.61 1350 93.10 92.59 92.58 1340 93.07 92.55 92.55 1330 93.03 92.53 92.52 1320 93.01 92.50 92.48 1310 92.98 92.47 92.44 1300 92.95 92.43 92.42 1290 92.92 92.40 92.37 1280 92.89 92.36 92.33 1270 92.86 92.33 92.31 1260 92.83 92.30 92.26 1250 92.79 92.26 92.22 1240 92.75 92.22 92.18 1230 92.71 92.18 92.15 1220 92.67 92.13 92.09 1210 92.63 92.09 92.05 1200 92.59 92.04 92.00 1190 92.55 92.00 91.94 1180 92.49 91.95 91.89 1170 92.45 91.90 91.85 1160 92.39 91.85 91.80 1150 92.34 91.79 91.74 1140 92.29 91.74 91.70 1130 92.23 91.69 91.64 1120 92.18 91.63 91.57 1110 92.12 91.58 91.50 1100 92.04 91.51 91.45 1090 92.00 91.44 91.39 1080 91.92 91.39 91.31 1070 91.85 91.29 91.23 1060 91.77 91.23 91.17 1050 91.69 91.15 91.08 1040 91.62 91.07 91.01 1030 91.52 90.99 90.91 1020 91.41 90.90 90.82 1010 91.34 90.81 90.73 1000 91.25 90.73 90.64 990 91.14 90.63 90.54 980 91.03 90.52 90.42 970 90.92 90.40 90.30 960 90.78 90.28 90.19 950 90.68 90.17 90.07