# Subaru Telescope Optical Tertiary Mirror In-Situ Measured Reflectivity # Coated with Aluminum on 2014-12-03 # Opened the vacuum chamber: No information # Measured with Subaru Portable Spectrophotometer (SPS) on 2021-01-08 (2228 days after) # Measured three times (two times in NIR) # Data between 950 nm and 1650 nm are also available (SPS-XWW). # Contact: Hirofumi Okita (okita14@naoj.org) # # Wavelength (nm) #1 #2 #3 1000 87.48 88.43 87.96 998 86.77 88.18 87.41 996 88.10 88.85 87.93 994 88.18 88.18 88.15 992 89.03 88.41 87.13 990 88.54 88.24 88.32 988 88.63 88.48 88.15 986 88.36 88.56 87.88 984 87.87 89.35 88.03 982 87.61 87.80 87.45 980 87.29 87.28 87.67 978 88.07 88.59 88.72 976 87.76 88.34 87.80 974 88.35 87.63 87.73 972 87.55 87.92 88.27 970 87.75 88.16 87.84 968 87.34 87.82 87.49 966 87.22 88.09 87.31 964 87.48 86.96 87.75 962 87.39 87.44 87.44 960 87.05 88.41 87.19 958 87.63 87.87 87.78 956 87.34 88.30 86.99 954 87.01 87.65 86.79 952 87.00 87.10 87.11 950 86.22 87.06 86.83 948 86.76 87.28 86.72 946 86.79 87.18 86.45 944 86.93 86.76 86.59 942 86.13 87.15 86.51 940 86.25 86.79 86.22 938 86.13 86.57 86.36 936 86.02 87.12 86.91 934 86.02 86.88 86.16 932 85.25 86.35 85.52 930 85.77 86.31 85.74 928 85.93 86.67 85.38 926 85.14 86.34 85.48 924 85.63 85.78 85.71 922 85.64 85.40 85.66 920 85.40 85.87 85.32 918 85.41 85.61 85.00 916 85.21 85.57 85.34 914 84.73 85.29 84.83 912 84.81 85.25 84.51 910 84.72 85.31 84.50 908 84.44 85.49 84.81 906 84.64 85.25 84.72 904 83.61 85.00 84.28 902 84.03 84.46 84.30 900 83.96 84.68 84.40 898 83.87 84.67 83.93 896 83.77 83.83 83.94 894 83.84 84.02 83.65 892 83.47 83.68 83.23 890 83.21 83.82 82.98 888 83.12 83.94 83.22 886 83.02 83.07 83.01 884 82.60 83.67 82.75 882 82.52 83.35 82.53 880 81.92 82.94 82.01 878 82.32 82.85 82.13 876 82.24 82.34 81.99 874 81.74 82.23 82.02 872 81.89 82.47 81.87 870 81.53 82.26 81.55 868 81.61 82.03 81.48 866 81.50 82.45 81.44 864 81.07 82.01 81.47 862 81.16 81.43 80.84 860 80.82 81.56 80.63 858 80.68 81.34 80.92 856 80.50 80.84 80.52 854 80.90 80.97 80.29 852 80.13 80.99 80.55 850 80.14 80.66 80.46 848 80.03 80.60 80.28 846 80.04 80.66 80.04 844 79.88 80.67 79.94 842 80.03 80.74 79.69 840 79.68 80.30 79.91 838 79.59 80.26 79.90 836 79.66 80.24 79.89 834 79.77 80.17 79.84 832 79.27 80.67 79.26 830 79.19 80.37 79.26 828 79.29 80.24 79.38 826 79.23 80.16 79.79 824 79.81 80.16 79.54 822 79.59 79.92 79.50 820 79.38 79.84 79.26 818 79.52 80.47 79.18 816 79.41 80.03 79.27 814 79.62 79.86 79.78 812 79.54 80.13 79.61 810 79.46 80.09 79.69 808 79.55 80.10 79.43 806 79.80 80.14 79.66 804 79.45 80.42 79.52 802 79.65 79.94 79.57 800 79.77 80.38 79.73 798 79.52 80.13 79.60 796 79.64 80.47 79.84 794 79.95 80.55 79.97 792 79.81 80.66 79.86 790 79.90 80.78 79.77 788 79.93 80.70 80.20 786 80.29 80.93 79.83 784 79.94 80.90 80.20 782 80.17 80.78 80.32 780 80.36 80.66 80.41 778 80.29 80.80 80.51 776 80.06 81.04 80.56 774 80.52 80.93 80.58 772 80.61 80.87 80.60 770 80.58 81.08 80.74 768 80.81 81.20 80.61 766 80.70 81.27 80.75 764 80.78 81.30 80.87 762 80.73 81.08 80.76 760 80.83 81.15 80.53 758 81.04 81.37 81.02 756 81.20 81.51 80.82 754 81.11 81.68 81.12 752 81.17 81.57 81.15 750 81.28 81.68 81.19 748 81.30 81.30 81.33 746 81.29 81.65 81.36 744 81.19 81.71 81.20 742 81.41 81.84 81.39 740 81.43 82.03 81.19 738 81.51 82.02 81.17 736 81.43 81.75 81.49 734 81.59 81.60 81.22 732 81.45 81.87 81.54 730 81.58 82.01 81.35 728 81.65 81.80 81.38 726 81.65 82.07 81.39 724 81.61 81.93 81.47 722 81.45 82.19 81.40 720 81.59 81.86 81.68 718 81.80 82.07 81.60 716 81.84 82.06 81.58 714 81.82 82.09 81.95 712 81.53 82.02 81.54 710 81.75 82.06 81.52 708 81.69 82.22 81.73 706 81.95 82.19 81.88 704 81.87 82.09 81.63 702 82.08 82.15 81.84 700 81.93 81.93 81.73 698 81.83 82.17 81.70 696 81.91 82.07 81.93 694 81.88 82.18 81.76 692 81.88 82.17 81.89 690 82.01 82.12 82.11 688 81.97 82.18 81.91 686 82.07 82.19 81.87 684 82.08 82.11 81.75 682 82.03 82.32 81.89 680 82.23 82.42 81.89 678 82.07 82.22 81.79 676 82.07 82.28 82.18 674 82.21 82.30 81.96 672 81.91 82.17 82.01 670 81.88 82.20 81.74 668 82.45 82.17 82.05 666 82.23 82.20 81.99 664 82.31 82.10 81.84 662 82.39 82.24 81.96 660 82.23 82.23 82.03 658 82.05 82.12 81.95 656 82.25 82.28 81.94 654 82.09 82.27 81.84 652 82.13 82.21 81.87 650 82.15 82.26 81.88 648 82.28 82.30 82.01 646 82.24 82.22 82.08 644 82.02 82.34 81.87 642 82.12 82.51 82.04 640 82.16 82.23 82.06 638 82.14 82.44 82.05 636 82.34 82.32 81.89 634 82.17 82.48 82.03 632 82.24 82.22 82.20 630 82.12 82.33 82.07 628 82.24 82.37 81.94 626 82.41 82.21 82.08 624 82.18 82.38 81.99 622 82.16 82.49 82.16 620 82.16 82.26 81.85 618 82.17 82.34 82.01 616 82.23 82.26 81.94 614 82.08 82.22 81.85 612 82.26 82.35 81.96 610 82.13 82.33 81.99 608 82.13 82.41 81.89 606 82.17 82.18 82.01 604 82.19 82.45 81.84 602 82.07 82.13 82.02 600 82.24 82.13 81.87 598 82.20 82.28 82.05 596 82.28 82.22 81.94 594 82.37 82.05 81.67 592 82.13 82.23 81.86 590 82.11 82.46 81.95 588 82.16 82.34 81.74 586 82.10 82.28 81.89 584 82.03 82.31 81.88 582 82.25 82.24 81.91 580 82.20 82.22 81.82 578 82.09 82.33 81.80 576 82.16 82.25 81.81 574 82.20 82.44 81.98 572 82.01 82.23 81.98 570 81.87 82.05 82.00 568 81.75 82.19 81.67 566 82.14 82.19 81.70 564 81.90 82.12 81.76 562 81.81 82.13 81.63 560 81.99 82.13 81.76 558 82.04 82.08 81.72 556 81.95 82.09 81.62 554 81.85 82.09 81.60 552 81.94 82.15 81.42 550 82.07 82.29 81.66 548 81.85 82.18 81.61 546 81.82 82.01 81.45 544 81.89 82.01 81.48 542 81.62 81.89 81.61 540 81.81 82.04 81.60 538 81.70 81.84 81.67 536 81.60 81.88 81.28 534 81.62 81.81 81.19 532 81.75 81.82 81.51 530 81.72 81.87 81.28 528 81.80 81.80 81.45 526 81.69 81.75 81.13 524 81.75 82.01 81.41 522 81.57 81.71 81.17 520 81.45 81.89 81.24 518 81.33 81.62 81.15 516 81.47 81.67 81.09 514 81.19 81.55 81.13 512 81.48 81.64 81.09 510 81.35 81.64 80.97 508 81.43 81.48 81.23 506 81.54 81.42 81.06 504 81.38 81.49 81.14 502 81.46 81.53 81.04 500 81.26 81.51 80.88 498 81.20 81.38 81.10 496 81.22 81.35 80.89 494 80.92 81.27 80.85 492 81.25 81.16 80.65 490 81.06 81.29 80.73 488 80.94 81.15 80.55 486 81.12 81.04 80.82 484 80.81 81.28 80.57 482 80.82 81.31 80.69 480 81.00 81.20 80.67 478 81.00 80.99 80.64 476 80.65 81.12 80.47 474 80.72 81.02 80.61 472 80.63 80.92 80.76 470 80.61 81.04 80.46 468 80.56 80.96 80.60 466 80.59 80.88 80.48 464 80.44 80.75 80.50 462 80.37 80.72 80.16 460 80.50 80.78 80.04 458 80.53 80.71 80.21 456 80.21 80.77 80.05 454 80.35 80.41 80.24 452 80.40 80.92 80.10 450 80.14 80.66 80.00 448 80.32 80.36 80.16 446 80.14 80.45 80.00 444 80.20 80.35 79.84 442 80.31 80.31 79.85 440 80.15 80.43 79.73 438 80.28 80.34 79.98 436 79.89 79.92 79.73 434 79.70 80.20 79.77 432 79.95 80.29 79.70 430 79.89 80.02 79.78 428 80.03 80.23 79.75 426 79.89 80.34 79.64 424 80.18 80.30 79.57 422 79.32 79.95 79.33 420 79.36 79.86 79.65 418 79.86 80.35 79.22 416 79.21 79.36 79.38 414 79.45 80.12 79.63 412 79.38 79.96 79.46 410 79.51 79.72 79.36 408 79.42 79.65 79.09 406 79.09 79.82 79.17 404 78.86 80.01 79.73 402 79.58 79.62 79.71 400 78.82 79.68 79.34 398 79.17 79.18 78.98 396 79.38 79.25 79.79 394 78.33 78.98 78.82 392 78.68 77.98 79.20 390 79.38 79.02 78.91 388 78.54 79.27 78.63 386 79.73 78.85 78.54 384 77.98 79.45 78.52 382 79.89 79.04 79.46 380 78.47 79.29 78.46 1650 null 94.10 93.74 1640 null 94.09 93.78 1630 null 94.10 93.77 1620 null 94.11 93.76 1610 null 94.11 93.76 1600 null 94.09 93.75 1590 null 94.09 93.74 1580 null 94.07 93.72 1570 null 94.06 93.70 1560 null 94.03 93.69 1550 null 94.02 93.66 1540 null 94.00 93.65 1530 null 93.98 93.63 1520 null 93.96 93.60 1510 null 93.94 93.58 1500 null 93.91 93.56 1490 null 93.89 93.53 1480 null 93.86 93.49 1470 null 93.84 93.48 1460 null 93.81 93.44 1450 null 93.78 93.41 1440 null 93.75 93.39 1430 null 93.72 93.35 1420 null 93.69 93.32 1410 null 93.64 93.29 1400 null 93.61 93.26 1390 null 93.57 93.22 1380 null 93.54 93.17 1370 null 93.49 93.13 1360 null 93.46 93.09 1350 null 93.41 93.05 1340 null 93.37 93.01 1330 null 93.33 92.97 1320 null 93.27 92.91 1310 null 93.22 92.88 1300 null 93.18 92.82 1290 null 93.13 92.78 1280 null 93.07 92.72 1270 null 93.02 92.66 1260 null 92.96 92.61 1250 null 92.90 92.54 1240 null 92.84 92.49 1230 null 92.78 92.42 1220 null 92.71 92.36 1210 null 92.63 92.28 1200 null 92.56 92.20 1190 null 92.48 92.13 1180 null 92.39 92.04 1170 null 92.31 91.95 1160 null 92.23 91.87 1150 null 92.13 91.77 1140 null 92.02 91.67 1130 null 91.92 91.55 1120 null 91.81 91.45 1110 null 91.69 91.33 1100 null 91.57 91.20 1090 null 91.43 91.05 1080 null 91.27 90.91 1070 null 91.12 90.75 1060 null 90.95 90.58 1050 null 90.78 90.40 1040 null 90.58 90.20 1030 null 90.35 89.99 1020 null 90.13 89.76 1010 null 89.89 89.49 1000 null 89.61 89.21 990 null 89.31 88.92 980 null 88.96 88.57 970 null 88.60 88.18 960 null 88.20 87.76 950 null 87.73 87.30