# 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 2018-11-05 (3727 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 88.03 87.73 88.94 998 89.57 88.60 89.37 996 88.65 87.44 88.74 994 89.04 88.05 89.84 992 89.20 88.94 88.89 990 88.93 88.89 89.78 988 89.49 88.63 89.34 986 88.31 88.93 89.78 984 89.16 88.21 89.66 982 89.77 88.17 89.09 980 88.78 89.21 89.71 978 89.23 89.17 90.03 976 89.79 89.25 89.23 974 89.33 89.00 89.21 972 88.91 89.38 89.72 970 88.80 88.72 89.57 968 88.94 89.13 89.96 966 88.88 89.39 90.18 964 88.39 88.82 89.42 962 89.45 89.06 88.72 960 89.24 88.86 89.45 958 88.57 88.62 89.28 956 89.38 88.39 89.57 954 88.53 88.78 89.13 952 88.49 88.61 88.76 950 88.91 88.48 89.06 948 88.38 88.14 89.27 946 88.46 88.43 88.87 944 88.74 87.97 88.45 942 87.79 88.02 88.80 940 87.54 87.57 88.34 938 87.83 87.89 88.38 936 87.78 88.12 88.29 934 88.03 87.54 88.35 932 87.86 87.99 88.33 930 87.72 87.47 88.23 928 87.43 87.51 88.01 926 87.89 87.85 88.26 924 87.63 87.37 87.54 922 87.45 86.91 88.13 920 87.19 87.00 87.85 918 87.08 86.78 87.59 916 87.12 86.95 87.60 914 87.41 86.72 87.28 912 87.19 86.90 87.08 910 86.92 86.58 87.06 908 87.03 86.36 86.93 906 86.88 86.22 86.86 904 86.40 86.13 86.76 902 86.59 86.14 86.63 900 86.57 85.90 86.70 898 86.12 85.38 86.43 896 86.50 85.39 86.37 894 85.92 85.65 86.28 892 86.27 85.60 86.14 890 85.85 85.78 85.83 888 85.64 84.93 85.77 886 85.71 85.03 85.69 884 85.58 84.89 85.69 882 85.35 84.67 85.61 880 85.09 84.69 85.42 878 85.16 84.60 85.34 876 84.90 84.61 85.16 874 85.04 83.81 84.82 872 84.82 84.09 84.55 870 84.77 83.64 84.58 868 84.43 83.42 84.40 866 84.45 83.72 84.08 864 83.74 83.33 84.17 862 83.52 83.27 84.19 860 83.62 83.15 84.04 858 83.34 82.68 83.86 856 83.37 82.70 83.61 854 83.17 82.48 83.16 852 83.05 82.09 83.36 850 82.70 82.08 83.19 848 82.56 81.55 82.64 846 82.86 81.85 83.09 844 82.19 81.65 82.86 842 82.11 81.20 82.79 840 82.05 81.09 82.14 838 81.87 81.23 81.96 836 81.60 80.47 82.01 834 81.34 80.37 81.77 832 81.02 80.27 81.51 830 80.99 80.04 81.08 828 80.94 80.17 81.07 826 80.57 79.88 81.10 824 80.56 79.67 80.93 822 80.13 79.24 80.73 820 80.06 79.17 80.60 818 79.50 79.02 80.18 816 79.90 78.68 80.18 814 79.35 78.47 79.71 812 79.51 78.19 79.82 810 79.03 78.27 79.73 808 78.76 77.65 79.63 806 78.54 77.64 78.94 804 78.48 77.68 78.70 802 78.49 77.09 78.74 800 78.40 77.05 78.10 798 77.89 77.02 78.03 796 77.45 76.44 77.74 794 77.39 76.42 77.71 792 77.30 76.24 77.48 790 77.13 76.03 76.96 788 76.51 75.45 77.17 786 76.61 75.42 76.85 784 76.46 75.39 76.78 782 76.37 75.26 76.53 780 75.95 74.63 76.01 778 75.49 74.57 75.76 776 75.74 74.26 75.77 774 75.31 73.97 75.54 772 75.09 73.72 75.22 770 74.76 73.60 75.09 768 74.50 73.22 74.98 766 74.47 73.13 74.34 764 73.90 72.84 74.25 762 73.58 72.82 73.90 760 73.46 72.19 73.62 758 73.20 71.95 73.64 756 73.06 71.68 73.39 754 72.87 71.40 73.15 752 72.51 71.30 72.95 750 72.10 70.95 72.53 748 71.88 70.54 72.53 746 71.78 70.43 72.19 744 71.48 70.15 71.80 742 71.20 69.75 71.52 740 70.94 69.61 71.37 738 70.62 69.34 71.03 736 70.40 68.87 70.79 734 69.98 68.67 70.45 732 69.68 68.45 70.38 730 69.59 68.37 69.81 728 69.49 67.98 69.69 726 69.00 67.58 69.37 724 68.66 67.43 69.06 722 68.33 67.08 68.96 720 68.21 66.72 68.69 718 67.97 66.66 68.26 716 67.59 66.18 68.02 714 67.57 65.83 67.83 712 67.12 65.60 67.65 710 67.15 65.44 67.19 708 66.44 65.22 66.96 706 66.27 64.65 66.72 704 65.86 64.37 66.55 702 65.80 64.11 66.16 700 65.50 63.68 65.85 698 65.32 63.58 65.59 696 64.82 63.08 65.44 694 64.49 62.86 65.18 692 64.17 62.67 64.98 690 63.95 62.42 64.49 688 63.64 61.93 64.27 686 63.49 61.57 63.98 684 63.11 61.47 63.66 682 62.94 61.10 63.44 680 62.57 60.88 63.34 678 62.40 60.51 62.86 676 61.90 60.31 62.70 674 61.62 59.83 62.26 672 61.46 59.84 61.94 670 60.99 59.38 61.57 668 60.77 58.90 61.25 666 60.49 58.68 61.04 664 59.98 58.29 60.89 662 59.84 58.06 60.54 660 59.68 57.74 60.15 658 59.42 57.44 59.76 656 58.90 57.17 59.67 654 58.47 56.76 59.22 652 58.02 56.29 58.71 650 57.64 55.85 58.25 648 57.29 55.41 57.74 646 57.05 54.98 57.63 644 56.85 54.74 57.26 642 56.40 54.70 57.09 640 56.21 54.35 56.95 638 56.11 54.12 56.85 636 55.80 53.80 56.44 634 55.62 53.61 56.24 632 55.19 53.41 55.98 630 55.06 52.99 55.67 628 54.77 52.80 55.56 626 54.62 52.57 55.45 624 54.38 52.45 55.19 622 54.30 52.12 54.98 620 53.95 51.90 54.57 618 53.83 51.68 54.46 616 53.51 51.40 54.15 614 53.08 51.23 54.02 612 52.95 51.05 53.51 610 52.81 50.80 53.50 608 52.61 50.55 53.34 606 52.16 50.30 53.14 604 52.05 50.02 52.84 602 51.94 49.86 52.70 600 51.64 49.64 52.52 598 51.46 49.47 52.27 596 51.18 49.11 51.97 594 51.14 48.93 51.92 592 50.79 48.71 51.50 590 50.59 48.67 51.28 588 50.31 48.25 51.15 586 50.20 48.06 50.92 584 49.76 47.71 50.67 582 49.66 47.55 50.60 580 49.43 47.35 50.31 578 49.18 47.06 49.91 576 49.02 47.00 49.79 574 48.78 46.71 49.58 572 48.50 46.45 49.31 570 48.30 46.21 49.17 568 48.14 45.89 48.91 566 47.77 45.80 48.77 564 47.64 45.57 48.41 562 47.41 45.42 48.29 560 47.29 45.15 48.15 558 47.10 44.95 47.75 556 46.71 44.62 47.66 554 46.59 44.43 47.43 552 46.37 44.32 47.17 550 46.20 44.02 46.99 548 45.82 43.82 46.75 546 45.82 43.65 46.59 544 45.64 43.45 46.46 542 45.20 43.16 46.05 540 45.04 42.98 45.91 538 44.82 42.76 45.78 536 44.56 42.43 45.57 534 44.44 42.36 45.23 532 44.20 42.12 44.98 530 44.05 41.98 44.90 528 43.72 41.75 44.56 526 43.52 41.36 44.43 524 43.51 41.23 44.12 522 42.97 41.04 43.92 520 42.77 40.71 43.80 518 42.65 40.43 43.45 516 42.43 40.29 43.19 514 42.16 40.03 42.99 512 41.81 39.90 42.80 510 41.53 39.51 42.57 508 41.63 39.26 42.30 506 41.30 39.07 42.05 504 41.09 38.86 41.77 502 40.78 38.65 41.50 500 40.46 38.42 41.42 498 40.39 38.21 41.11 496 39.99 38.00 40.97 494 39.69 37.58 40.49 492 39.65 37.61 40.40 490 39.35 37.25 40.01 488 39.19 36.81 39.61 486 38.88 36.69 39.59 484 38.54 36.44 39.31 482 38.28 36.37 39.08 480 37.96 35.78 38.57 478 37.60 35.51 38.39 476 37.26 35.32 37.98 474 37.10 34.92 37.83 472 36.59 34.80 37.36 470 36.48 34.24 37.01 468 36.27 33.98 37.01 466 35.87 33.70 36.44 464 35.47 33.48 36.06 462 35.16 32.99 35.79 460 34.86 32.73 35.32 458 34.46 32.47 35.01 456 34.07 32.05 34.75 454 33.60 31.66 34.36 452 33.43 31.26 33.78 450 33.01 31.10 33.30 448 32.57 30.68 33.16 446 32.17 30.34 32.78 444 31.69 29.87 32.10 442 31.42 29.20 31.61 440 30.98 28.95 31.31 438 30.43 28.46 31.11 436 29.89 28.20 30.19 434 29.71 27.87 30.03 432 29.14 27.31 29.47 430 28.68 26.88 29.05 428 28.33 26.59 28.75 426 27.91 25.99 28.43 424 27.44 25.57 27.59 422 26.89 25.08 27.22 420 26.70 24.86 26.57 418 26.22 24.40 26.24 416 25.53 23.63 26.11 414 25.41 23.09 25.29 412 25.02 23.35 25.24 410 24.58 22.80 24.82 408 23.94 22.36 24.26 406 23.67 22.20 24.19 404 23.12 21.81 23.61 402 23.04 21.58 23.35 400 22.38 20.98 23.14 398 22.29 21.04 22.94 396 22.42 21.17 22.41 394 21.82 20.93 22.26 392 21.73 20.59 22.08 390 22.19 20.31 21.98 388 21.53 19.63 21.38 386 21.26 20.04 22.21 384 21.16 19.65 22.21 382 21.37 20.14 21.71 380 20.77 19.49 21.72 1650 98.40 98.29 98.26 1640 98.40 98.30 98.28 1630 98.41 98.32 98.29 1620 98.43 98.32 98.30 1610 98.42 98.32 98.31 1600 98.43 98.30 98.32 1590 98.41 98.29 98.32 1580 98.41 98.29 98.31 1570 98.39 98.28 98.30 1560 98.38 98.26 98.29 1550 98.37 98.25 98.29 1540 98.36 98.24 98.28 1530 98.34 98.22 98.27 1520 98.32 98.21 98.25 1510 98.30 98.18 98.24 1500 98.28 98.17 98.22 1490 98.26 98.14 98.20 1480 98.24 98.11 98.17 1470 98.20 98.08 98.14 1460 98.17 98.04 98.12 1450 98.14 98.02 98.09 1440 98.11 97.97 98.06 1430 98.07 97.94 98.03 1420 98.03 97.91 97.99 1410 98.00 97.87 97.95 1400 97.95 97.82 97.92 1390 97.91 97.78 97.87 1380 97.86 97.73 97.83 1370 97.80 97.67 97.76 1360 97.75 97.61 97.71 1350 97.69 97.56 97.66 1340 97.63 97.49 97.59 1330 97.57 97.43 97.55 1320 97.50 97.37 97.48 1310 97.44 97.30 97.41 1300 97.37 97.24 97.35 1290 97.29 97.16 97.27 1280 97.23 97.09 97.19 1270 97.14 97.01 97.11 1260 97.06 96.93 97.04 1250 96.97 96.84 96.95 1240 96.89 96.74 96.85 1230 96.78 96.64 96.76 1220 96.67 96.53 96.66 1210 96.57 96.42 96.54 1200 96.44 96.30 96.43 1190 96.31 96.16 96.30 1180 96.18 96.02 96.16 1170 96.05 95.89 96.03 1160 95.90 95.75 95.89 1150 95.77 95.60 95.75 1140 95.63 95.45 95.60 1130 95.46 95.28 95.43 1120 95.28 95.10 95.25 1110 95.09 94.90 95.07 1100 94.88 94.70 94.86 1090 94.67 94.48 94.66 1080 94.44 94.23 94.45 1070 94.20 93.99 94.20 1060 93.94 93.73 93.94 1050 93.68 93.45 93.67 1040 93.40 93.15 93.38 1030 93.09 92.84 93.10 1020 92.78 92.51 92.78 1010 92.43 92.15 92.44 1000 92.07 91.78 92.08 990 91.68 91.37 91.70 980 91.26 90.95 91.30 970 90.84 90.50 90.87 960 90.38 90.02 90.42 950 89.89 89.51 89.94