# 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 2019-11-05 (4092 days after) # Measured two times # Data between 950 nm and 1650 nm are also available (SPS-XWW). # Contact: Hirofumi Okita (okita14@naoj.org) # # Wavelength (nm) #1 #2 1000 71.81 71.43 998 71.82 72.04 996 72.10 71.30 994 72.39 71.75 992 71.24 72.82 990 71.41 72.18 988 72.03 72.50 986 71.37 71.88 984 71.91 72.24 982 72.13 72.16 980 71.93 71.62 978 71.45 71.81 976 71.40 71.72 974 70.28 71.28 972 71.60 71.21 970 70.86 71.49 968 70.78 71.38 966 71.29 71.45 964 70.86 70.46 962 70.87 71.15 960 70.69 70.87 958 70.47 70.79 956 69.79 70.06 954 70.69 70.61 952 70.56 70.28 950 70.01 69.81 948 69.75 69.79 946 69.55 69.84 944 69.81 69.39 942 69.22 69.51 940 69.59 69.47 938 69.05 68.89 936 68.78 68.75 934 68.72 68.58 932 68.87 67.98 930 68.26 68.38 928 68.33 68.39 926 67.93 67.92 924 67.56 67.88 922 67.75 67.78 920 67.69 67.57 918 67.37 67.22 916 66.82 67.11 914 67.03 66.96 912 66.74 66.89 910 66.49 66.42 908 66.45 66.76 906 66.01 66.46 904 66.23 65.79 902 66.12 65.69 900 65.41 65.33 898 65.46 65.30 896 64.95 65.23 894 64.94 65.01 892 64.75 65.11 890 64.64 64.77 888 64.23 64.45 886 63.83 64.30 884 63.93 63.96 882 63.70 63.77 880 63.37 63.47 878 63.10 62.87 876 62.97 62.89 874 62.70 62.97 872 62.47 62.86 870 62.43 62.51 868 62.03 62.31 866 61.70 62.01 864 61.70 61.72 862 61.46 61.50 860 61.29 61.19 858 60.78 61.24 856 60.69 60.88 854 60.62 60.72 852 60.37 60.38 850 60.11 60.11 848 60.08 60.00 846 59.69 59.63 844 59.58 59.28 842 59.11 59.04 840 58.95 58.95 838 59.07 58.65 836 58.70 58.53 834 58.34 58.35 832 58.01 58.23 830 57.86 58.23 828 57.21 57.78 826 57.52 57.33 824 57.29 57.11 822 57.07 57.00 820 56.90 56.61 818 56.40 56.41 816 56.23 56.18 814 55.92 55.96 812 55.60 55.70 810 55.33 55.51 808 55.27 55.05 806 55.07 55.28 804 54.82 54.72 802 54.72 54.63 800 54.48 54.34 798 54.03 54.08 796 54.05 54.06 794 53.52 53.53 792 53.45 53.33 790 53.27 53.21 788 52.95 52.90 786 52.64 52.72 784 52.35 52.56 782 52.25 52.25 780 51.81 51.96 778 51.69 51.65 776 51.55 51.42 774 51.03 51.23 772 50.86 51.03 770 50.65 50.85 768 50.34 50.42 766 50.32 50.13 764 50.01 49.97 762 49.60 49.55 760 49.33 49.39 758 49.10 49.07 756 48.93 48.83 754 48.78 48.76 752 48.42 48.44 750 48.33 48.18 748 47.91 47.85 746 47.64 47.59 744 47.36 47.36 742 47.15 47.10 740 46.99 47.09 738 46.71 46.77 736 46.46 46.39 734 46.13 46.25 732 46.10 45.88 730 45.79 45.65 728 45.39 45.48 726 45.19 45.24 724 44.89 44.80 722 44.79 44.69 720 44.48 44.45 718 44.24 44.30 716 44.11 43.95 714 43.75 43.58 712 43.47 43.46 710 43.33 43.37 708 43.17 42.83 706 42.89 42.68 704 42.58 42.50 702 42.35 42.19 700 42.24 42.07 698 41.78 41.93 696 41.59 41.52 694 41.22 41.28 692 40.94 41.04 690 40.71 40.84 688 40.50 40.62 686 40.42 40.32 684 40.04 40.06 682 39.92 39.99 680 39.59 39.52 678 39.43 39.38 676 39.19 39.18 674 38.87 38.94 672 38.76 38.59 670 38.32 38.41 668 38.23 38.16 666 37.90 38.04 664 37.74 37.66 662 37.46 37.35 660 37.35 37.32 658 36.98 37.05 656 36.81 36.72 654 36.45 36.51 652 36.18 36.12 650 35.65 35.71 648 35.42 35.37 646 35.20 35.24 644 34.95 35.05 642 34.98 34.76 640 34.68 34.59 638 34.53 34.42 636 34.24 34.19 634 34.14 34.10 632 33.86 33.98 630 33.70 33.69 628 33.54 33.42 626 33.28 33.23 624 33.15 33.02 622 32.99 32.90 620 32.71 32.79 618 32.66 32.45 616 32.44 32.52 614 32.16 32.24 612 32.06 31.98 610 31.78 31.81 608 31.64 31.56 606 31.46 31.42 604 31.34 31.19 602 31.09 31.13 600 30.98 30.84 598 30.72 30.73 596 30.62 30.59 594 30.44 30.54 592 30.23 30.23 590 30.11 30.01 588 29.88 29.94 586 29.71 29.65 584 29.47 29.41 582 29.28 29.27 580 29.09 29.17 578 28.98 28.98 576 28.63 28.55 574 28.59 28.55 572 28.22 28.27 570 28.15 27.98 568 27.82 27.84 566 27.70 27.58 564 27.45 27.40 562 27.23 27.11 560 27.10 27.09 558 26.87 26.90 556 26.75 26.75 554 26.64 26.60 552 26.38 26.27 550 26.12 26.09 548 26.05 25.80 546 25.86 25.82 544 25.66 25.62 542 25.35 25.24 540 25.04 25.14 538 25.09 24.97 536 24.59 24.67 534 24.56 24.42 532 24.33 24.30 530 24.24 24.07 528 24.00 23.91 526 23.60 23.72 524 23.57 23.49 522 23.44 23.32 520 23.17 22.95 518 22.89 22.80 516 22.75 22.69 514 22.59 22.55 512 22.38 22.42 510 22.05 22.14 508 21.86 21.73 506 21.77 21.70 504 21.58 21.36 502 21.17 21.19 500 21.16 20.98 498 20.85 20.86 496 20.64 20.68 494 20.52 20.40 492 20.22 20.25 490 19.90 19.98 488 19.88 19.84 486 19.64 19.59 484 19.45 19.29 482 19.20 19.16 480 19.01 18.85 478 18.64 18.81 476 18.51 18.53 474 18.29 18.26 472 18.17 18.05 470 17.82 17.76 468 17.75 17.62 466 17.55 17.42 464 17.26 17.25 462 16.91 16.75 460 16.67 16.74 458 16.49 16.62 456 16.45 16.21 454 16.20 15.87 452 15.78 15.69 450 15.58 15.56 448 15.25 15.35 446 15.40 15.10 444 14.84 14.79 442 14.38 14.75 440 14.65 14.47 438 14.16 14.31 436 13.84 13.96 434 13.43 13.70 432 13.30 13.29 430 13.27 13.06 428 13.20 12.89 426 12.64 12.72 424 12.58 12.46 422 12.55 12.23 420 12.14 12.22 418 11.67 11.98 416 11.75 12.17 414 11.84 11.46 412 11.43 11.39 410 11.21 11.27 408 11.04 11.62 406 10.93 11.35 404 11.30 10.85 402 11.04 11.09 400 10.94 10.93 398 10.78 10.93 396 10.99 11.46 394 10.69 11.44 392 11.38 10.42 390 11.40 11.16 388 11.70 11.33 386 12.70 11.28 384 11.75 11.88 382 12.43 10.82 380 11.95 12.37 1650 96.89 96.87 1640 96.91 96.90 1630 96.91 96.90 1620 96.89 96.88 1610 96.89 96.88 1600 96.85 96.84 1590 96.80 96.80 1580 96.76 96.74 1570 96.71 96.70 1560 96.65 96.64 1550 96.59 96.58 1540 96.52 96.51 1530 96.45 96.44 1520 96.38 96.36 1510 96.29 96.28 1500 96.20 96.19 1490 96.11 96.08 1480 96.00 95.99 1470 95.89 95.88 1460 95.77 95.75 1450 95.65 95.63 1440 95.51 95.49 1430 95.38 95.35 1420 95.23 95.22 1410 95.08 95.06 1400 94.92 94.91 1390 94.75 94.74 1380 94.56 94.55 1370 94.35 94.33 1360 94.14 94.14 1350 93.93 93.91 1340 93.71 93.69 1330 93.48 93.45 1320 93.24 93.22 1310 92.98 92.96 1300 92.71 92.70 1290 92.44 92.42 1280 92.14 92.13 1270 91.83 91.83 1260 91.53 91.51 1250 91.18 91.17 1240 90.83 90.81 1230 90.46 90.44 1220 90.08 90.06 1210 89.66 89.65 1200 89.23 89.21 1190 88.77 88.76 1180 88.30 88.28 1170 87.82 87.80 1160 87.32 87.30 1150 86.82 86.79 1140 86.27 86.25 1130 85.70 85.69 1120 85.11 85.09 1110 84.50 84.47 1100 83.85 83.85 1090 83.18 83.17 1080 82.48 82.47 1070 81.78 81.75 1060 81.05 81.03 1050 80.29 80.28 1040 79.51 79.48 1030 78.72 78.68 1020 77.88 77.86 1010 77.03 77.02 1000 76.16 76.14 990 75.28 75.24 980 74.34 74.31 970 73.41 73.39 960 72.46 72.43 950 71.48 71.45