# Subaru Telescope Infrared Secondary Mirror In-Situ Measured Reflectivity # Coated with Silver on 2008-08-22 # Opened the vacuum chamber: No information # Measured with Subaru Portable Spectrophotometer (SPS) on 2019-01-31 (3814 days after) # Measured four times # Data between 950 nm and 1650 nm are also available (SPS-XWW). # Contact: Hirofumi Okita (okita14@naoj.org) # # Wavelength (nm) #1 #2 #3 #4 1000 85.20 85.13 86.26 86.14 998 85.27 83.83 86.69 85.92 996 84.98 84.20 86.11 86.62 994 86.14 85.65 87.55 87.06 992 85.63 85.17 86.72 85.53 990 85.26 85.77 86.45 85.75 988 86.14 85.76 88.06 86.61 986 86.28 85.27 87.13 86.11 984 85.82 85.68 86.46 87.38 982 86.03 85.29 87.51 86.50 980 86.19 85.10 86.83 85.70 978 86.63 85.26 86.43 86.84 976 86.17 84.98 86.92 86.95 974 85.98 85.39 86.58 86.08 972 86.62 85.92 86.24 86.33 970 85.76 85.09 87.71 86.81 968 86.45 85.16 86.44 86.33 966 86.04 84.94 86.65 86.68 964 85.84 85.09 86.56 86.73 962 85.21 84.84 85.98 86.64 960 85.58 84.36 86.27 86.02 958 85.49 85.10 86.71 86.33 956 85.52 84.69 85.94 86.42 954 85.44 84.56 86.45 85.83 952 85.18 83.92 86.02 85.96 950 85.59 84.97 86.22 85.90 948 85.47 84.38 86.42 85.39 946 85.40 84.22 86.02 85.17 944 84.98 84.28 85.71 85.31 942 84.91 83.77 85.78 85.66 940 85.20 83.97 86.10 85.66 938 85.09 83.56 85.31 85.16 936 84.11 83.50 85.12 84.84 934 85.23 83.58 85.42 84.79 932 84.38 83.75 84.99 85.10 930 84.25 83.11 84.50 84.61 928 83.56 83.19 84.71 84.47 926 84.07 83.39 84.97 84.68 924 83.70 82.64 84.83 84.84 922 83.99 83.00 84.80 84.20 920 83.74 82.55 84.47 84.79 918 83.49 82.85 84.15 84.11 916 83.40 82.37 84.21 84.06 914 83.47 82.01 83.76 83.73 912 83.02 82.08 83.95 83.53 910 83.20 81.93 83.51 83.94 908 82.98 81.62 83.73 83.26 906 82.37 81.80 83.67 83.15 904 82.49 81.47 83.57 82.95 902 82.44 81.41 82.89 82.95 900 82.28 81.04 82.79 82.56 898 82.00 80.61 83.00 82.58 896 81.77 80.20 82.85 82.25 894 82.16 80.47 82.73 82.15 892 81.90 80.68 81.97 82.28 890 81.40 80.46 82.12 82.42 888 81.17 80.07 81.95 81.94 886 81.17 79.92 81.79 81.68 884 81.05 79.97 81.27 81.45 882 80.66 79.31 81.61 81.05 880 80.54 79.26 81.23 80.92 878 80.40 79.13 81.34 81.12 876 80.18 79.13 80.97 80.75 874 79.75 78.75 80.73 80.61 872 79.68 78.49 80.36 80.58 870 79.74 78.16 80.39 80.63 868 79.43 78.19 80.07 80.00 866 79.14 77.58 80.06 79.72 864 78.92 77.72 79.54 79.57 862 78.59 77.34 79.41 79.18 860 78.28 77.47 79.45 79.00 858 78.27 77.19 79.50 79.18 856 78.13 76.95 78.81 78.88 854 77.95 76.64 78.83 78.38 852 77.65 76.40 78.58 78.51 850 77.64 76.40 78.69 78.26 848 77.44 75.96 78.19 77.95 846 77.09 75.80 77.72 77.66 844 77.06 75.95 77.39 77.49 842 76.47 75.36 77.34 77.35 840 76.32 74.93 77.40 77.18 838 76.08 75.06 76.99 77.06 836 75.96 74.98 76.93 76.53 834 75.65 74.49 76.45 76.06 832 75.74 74.07 76.36 76.48 830 75.28 73.77 75.97 76.28 828 74.94 73.62 75.84 75.76 826 74.79 73.85 75.48 75.76 824 74.72 73.56 75.14 74.99 822 74.33 73.23 75.22 74.97 820 73.77 72.74 74.90 75.09 818 74.22 72.79 74.78 74.56 816 73.54 72.27 74.41 74.37 814 73.22 71.78 74.26 74.16 812 73.07 71.99 73.81 73.91 810 72.92 71.45 73.55 73.78 808 72.82 71.29 73.32 73.05 806 72.74 71.06 73.46 73.42 804 72.26 70.79 73.00 73.17 802 71.98 70.57 72.94 72.34 800 71.84 70.46 72.57 72.35 798 71.13 70.31 72.23 71.89 796 71.01 69.83 72.08 71.86 794 71.10 69.48 71.60 71.57 792 70.64 69.31 71.33 71.43 790 70.51 68.97 71.09 71.01 788 69.98 68.69 70.55 71.02 786 69.74 68.58 70.55 70.58 784 69.71 68.41 70.10 70.46 782 69.43 67.85 69.92 70.35 780 68.92 67.54 69.74 69.94 778 68.73 67.37 69.38 69.32 776 68.62 67.25 69.20 69.60 774 68.09 66.94 69.04 69.12 772 68.13 66.33 68.85 68.71 770 67.56 66.33 68.46 68.55 768 67.28 65.99 68.26 68.36 766 67.16 65.63 67.97 67.76 764 67.06 65.54 67.60 67.75 762 66.61 65.27 67.63 67.26 760 66.06 64.86 66.94 66.94 758 66.11 64.76 66.68 66.92 756 65.83 64.27 66.56 66.60 754 65.64 63.82 66.32 66.33 752 65.26 63.88 65.86 65.99 750 64.82 63.31 65.53 65.50 748 64.56 63.40 65.33 65.11 746 64.25 63.04 65.03 65.25 744 64.00 62.65 64.76 64.88 742 64.02 62.25 64.65 64.47 740 63.61 62.25 64.08 64.26 738 63.37 61.70 63.92 63.72 736 62.99 61.32 63.82 63.38 734 62.69 61.09 63.45 63.48 732 62.40 60.97 63.09 63.09 730 61.99 60.61 62.66 62.96 728 61.74 60.26 62.35 62.58 726 61.58 59.95 62.13 62.19 724 61.32 59.67 61.95 61.92 722 61.18 59.71 61.74 61.72 720 60.57 59.20 61.41 61.39 718 60.46 58.94 60.95 61.09 716 60.16 58.48 60.66 60.76 714 59.89 58.32 60.37 60.61 712 59.52 58.17 60.21 60.44 710 59.28 57.75 59.97 60.05 708 59.09 57.40 59.73 59.76 706 58.65 57.24 59.37 59.25 704 58.54 57.12 59.13 59.32 702 58.15 56.78 58.89 58.90 700 57.97 56.36 58.59 58.64 698 57.65 56.11 58.23 58.39 696 57.21 55.78 57.96 57.87 694 56.99 55.56 57.84 57.74 692 56.71 55.47 57.51 57.56 690 56.55 54.96 57.11 57.15 688 56.18 54.77 57.02 56.84 686 55.95 54.41 56.71 56.59 684 55.63 54.25 56.31 56.15 682 55.48 54.06 56.10 56.00 680 55.13 53.64 55.72 55.74 678 54.89 53.43 55.42 55.38 676 54.68 53.10 55.29 55.31 674 54.16 53.12 54.92 55.20 672 54.12 52.76 54.61 54.85 670 53.95 52.22 54.39 54.35 668 53.46 52.04 54.22 54.23 666 53.21 51.85 53.87 53.86 664 53.09 51.63 53.80 53.58 662 52.92 51.48 53.42 53.41 660 52.60 51.12 53.09 53.16 658 52.28 50.71 52.88 52.71 656 52.05 50.63 52.63 52.66 654 51.58 50.20 52.29 52.22 652 51.29 49.84 51.66 51.80 650 50.97 49.36 51.43 51.34 648 50.55 49.13 51.23 50.89 646 50.32 48.80 50.75 50.79 644 50.13 48.72 50.68 50.60 642 49.91 48.65 50.33 50.39 640 49.69 48.31 50.31 50.20 638 49.64 48.00 50.10 49.96 636 49.25 47.77 49.85 49.76 634 49.02 47.67 49.69 49.60 632 48.89 47.42 49.40 49.38 630 48.80 47.29 49.27 49.23 628 48.59 47.12 49.10 49.00 626 48.28 46.87 48.83 48.68 624 48.24 46.83 48.77 48.56 622 47.88 46.53 48.33 48.43 620 47.72 46.47 48.29 48.21 618 47.54 46.22 48.04 48.06 616 47.47 45.98 47.77 47.83 614 47.14 45.90 47.68 47.63 612 47.12 45.69 47.47 47.49 610 46.81 45.31 47.32 47.32 608 46.69 45.22 47.17 47.20 606 46.46 45.06 46.93 46.80 604 46.31 44.88 46.72 46.59 602 46.20 44.55 46.49 46.54 600 45.86 44.66 46.46 46.34 598 45.74 44.36 46.27 46.14 596 45.72 44.18 46.05 46.11 594 45.28 43.96 46.08 45.73 592 45.12 43.77 45.75 45.60 590 44.92 43.58 45.45 45.48 588 44.86 43.51 45.29 45.24 586 44.65 43.28 45.12 44.97 584 44.46 43.02 44.98 44.90 582 44.29 42.97 44.74 44.60 580 44.08 42.70 44.58 44.49 578 43.88 42.44 44.31 44.35 576 43.63 42.35 44.18 44.08 574 43.40 42.19 44.04 43.88 572 43.37 42.06 43.83 43.52 570 43.08 41.89 43.57 43.62 568 42.78 41.62 43.40 43.35 566 42.71 41.38 43.15 43.04 564 42.53 41.24 42.86 42.89 562 42.30 41.04 42.79 42.52 560 42.08 40.69 42.56 42.55 558 41.83 40.62 42.38 42.33 556 41.78 40.47 42.31 42.04 554 41.48 40.17 41.93 41.83 552 41.21 40.09 41.80 41.66 550 41.13 40.06 41.65 41.49 548 40.90 39.73 41.40 41.26 546 40.64 39.49 41.18 41.06 544 40.53 39.44 41.06 40.89 542 40.38 39.09 40.74 40.65 540 40.13 38.99 40.63 40.49 538 39.93 38.74 40.45 40.28 536 39.72 38.57 40.36 40.07 534 39.46 38.26 39.94 39.84 532 39.19 38.10 39.68 39.61 530 39.02 38.00 39.66 39.39 528 38.62 37.82 39.29 39.23 526 38.77 37.54 39.13 38.76 524 38.42 37.35 38.88 38.73 522 38.13 36.88 38.65 38.47 520 37.94 36.75 38.38 38.28 518 37.55 36.63 38.18 38.11 516 37.35 36.39 37.84 37.69 514 37.11 36.30 37.73 37.46 512 36.91 35.83 37.51 37.39 510 36.68 35.70 37.17 37.09 508 36.48 35.43 36.92 36.80 506 36.33 35.15 36.82 36.61 504 35.87 34.94 36.46 36.43 502 35.67 34.64 36.29 36.18 500 35.42 34.58 36.00 35.94 498 35.16 34.29 35.64 35.65 496 34.95 34.02 35.52 35.42 494 34.62 33.93 35.11 35.15 492 34.37 33.47 34.76 34.88 490 34.12 33.10 34.64 34.50 488 33.82 33.15 34.47 34.10 486 33.52 32.78 34.06 34.05 484 33.23 32.50 33.61 33.82 482 33.01 32.14 33.53 33.33 480 32.76 31.96 33.27 33.13 478 32.30 31.62 32.87 32.77 476 32.07 31.41 32.55 32.43 474 31.75 30.94 32.32 32.14 472 31.59 30.73 31.99 31.63 470 31.03 30.58 31.56 31.59 468 30.77 30.20 31.29 31.18 466 30.54 29.93 31.02 30.89 464 30.25 29.75 30.68 30.57 462 29.76 29.32 30.21 30.17 460 29.48 28.94 29.85 29.89 458 28.96 28.60 29.84 29.45 456 28.84 28.20 29.33 29.06 454 28.15 28.03 28.91 28.75 452 27.88 27.65 28.57 28.57 450 27.55 27.18 27.97 27.91 448 27.13 26.99 27.84 27.49 446 26.86 26.57 27.33 27.06 444 26.50 26.18 26.95 26.72 442 26.04 25.96 26.62 26.41 440 25.54 25.55 26.01 25.85 438 25.27 25.03 25.55 25.76 436 24.79 24.67 25.27 25.31 434 24.47 24.36 24.86 24.95 432 23.94 24.00 24.51 24.25 430 23.41 23.63 23.90 24.14 428 23.10 23.26 23.60 23.52 426 22.60 22.90 23.29 23.26 424 22.21 22.70 22.93 22.83 422 21.89 22.34 22.35 22.26 420 21.65 22.17 21.77 21.96 418 21.06 21.66 21.75 21.45 416 20.46 20.89 21.01 21.38 414 20.24 20.86 20.78 20.68 412 20.12 20.93 20.51 20.40 410 19.76 20.15 20.43 19.90 408 19.61 20.32 19.88 19.61 406 19.19 19.88 19.92 19.62 404 18.34 19.57 19.46 19.34 402 18.46 19.29 19.29 18.91 400 18.24 19.32 19.22 18.95 398 18.19 18.95 18.87 18.03 396 17.71 18.95 18.56 18.65 394 17.72 18.41 18.48 18.48 392 17.73 18.02 18.52 18.48 390 17.82 18.72 18.94 18.10 388 17.30 18.08 18.28 17.96 386 17.41 18.03 17.93 17.85 384 17.44 18.42 17.75 18.38 382 18.05 18.58 17.80 17.76 380 17.59 18.31 17.94 17.89 1650 98.10 97.97 98.13 98.08 1640 98.12 98.00 98.16 98.09 1630 98.13 98.01 98.17 98.11 1620 98.13 98.01 98.18 98.12 1610 98.14 98.02 98.18 98.12 1600 98.12 98.01 98.18 98.12 1590 98.12 98.00 98.17 98.11 1580 98.11 97.99 98.16 98.11 1570 98.10 97.96 98.15 98.09 1560 98.08 97.95 98.14 98.08 1550 98.07 97.93 98.13 98.07 1540 98.05 97.92 98.12 98.05 1530 98.03 97.90 98.10 98.04 1520 98.01 97.88 98.08 98.02 1510 97.98 97.85 98.06 98.00 1500 97.96 97.82 98.04 97.97 1490 97.93 97.78 98.01 97.95 1480 97.90 97.75 97.98 97.91 1470 97.86 97.72 97.95 97.88 1460 97.82 97.67 97.92 97.85 1450 97.78 97.63 97.88 97.81 1440 97.75 97.58 97.84 97.77 1430 97.70 97.53 97.80 97.73 1420 97.65 97.49 97.76 97.69 1410 97.60 97.44 97.71 97.64 1400 97.55 97.38 97.67 97.59 1390 97.50 97.32 97.62 97.54 1380 97.44 97.26 97.55 97.47 1370 97.36 97.18 97.49 97.41 1360 97.29 97.10 97.43 97.34 1350 97.23 97.02 97.37 97.28 1340 97.16 96.94 97.30 97.21 1330 97.09 96.86 97.22 97.14 1320 97.00 96.77 97.14 97.06 1310 96.92 96.68 97.07 96.98 1300 96.83 96.59 96.99 96.90 1290 96.74 96.49 96.90 96.82 1280 96.65 96.39 96.82 96.72 1270 96.56 96.28 96.73 96.62 1260 96.44 96.16 96.63 96.53 1250 96.34 96.04 96.53 96.42 1240 96.22 95.91 96.42 96.31 1230 96.09 95.78 96.30 96.19 1220 95.96 95.64 96.18 96.06 1210 95.83 95.47 96.03 95.92 1200 95.67 95.31 95.89 95.77 1190 95.50 95.13 95.74 95.61 1180 95.33 94.93 95.57 95.45 1170 95.15 94.74 95.41 95.28 1160 94.97 94.55 95.24 95.11 1150 94.79 94.35 95.06 94.93 1140 94.59 94.14 94.87 94.73 1130 94.37 93.89 94.66 94.53 1120 94.14 93.65 94.44 94.30 1110 93.89 93.37 94.20 94.05 1100 93.63 93.08 93.95 93.81 1090 93.33 92.76 93.67 93.54 1080 93.03 92.44 93.38 93.24 1070 92.71 92.09 93.08 92.92 1060 92.37 91.72 92.75 92.61 1050 92.02 91.33 92.41 92.26 1040 91.63 90.92 92.04 91.88 1030 91.22 90.49 91.65 91.49 1020 90.79 90.03 91.23 91.07 1010 90.33 89.52 90.78 90.63 1000 89.83 88.99 90.30 90.15 990 89.30 88.45 89.80 89.66 980 88.74 87.85 89.27 89.11 970 88.17 87.24 88.69 88.55 960 87.54 86.59 88.10 87.96 950 86.89 85.89 87.45 87.32