# 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 2021-08-12 (2444 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 86.95 88.61 87.51 998 86.16 87.01 88.42 996 87.69 87.64 87.29 994 88.03 87.33 87.16 992 87.33 87.25 86.81 990 87.91 87.41 87.37 988 87.58 88.11 87.52 986 87.54 87.78 88.15 984 87.57 87.59 87.89 982 88.00 87.81 87.27 980 87.71 87.43 86.48 978 88.11 87.15 87.09 976 87.87 86.77 87.19 974 87.76 87.23 87.45 972 87.15 87.47 86.96 970 86.96 87.47 87.24 968 86.76 86.84 87.12 966 87.74 87.33 86.80 964 86.97 86.63 86.86 962 87.03 86.87 86.45 960 87.11 86.31 86.61 958 86.21 86.30 86.15 956 87.32 86.50 86.82 954 86.67 87.11 86.45 952 86.74 86.66 86.37 950 86.41 85.84 86.15 948 86.35 85.94 86.57 946 85.97 85.86 86.09 944 86.18 85.88 85.99 942 86.02 85.60 85.85 940 85.71 86.10 85.89 938 85.47 85.60 85.48 936 86.31 85.68 86.07 934 85.84 85.67 85.98 932 85.50 85.55 85.23 930 85.81 85.20 85.26 928 85.26 85.83 85.61 926 85.17 85.11 85.66 924 85.17 84.86 85.04 922 85.31 85.10 84.87 920 85.16 85.17 84.66 918 84.46 84.65 84.54 916 84.57 84.68 84.67 914 84.22 84.29 84.18 912 84.39 84.38 84.21 910 84.29 84.11 83.58 908 84.38 83.68 83.83 906 83.90 83.74 83.79 904 83.87 83.91 83.78 902 83.43 83.62 83.60 900 83.17 83.31 83.39 898 83.71 83.19 83.04 896 83.26 83.37 82.88 894 82.99 82.97 82.70 892 82.98 83.08 82.99 890 82.62 82.56 82.63 888 82.70 82.49 82.60 886 82.40 82.21 82.21 884 82.08 81.85 82.40 882 82.05 81.96 81.86 880 81.84 81.69 81.56 878 82.12 81.83 81.20 876 81.46 81.73 81.63 874 81.44 81.27 81.29 872 81.58 80.95 81.25 870 81.14 81.24 80.94 868 81.16 80.78 81.01 866 80.91 80.76 80.93 864 80.77 80.48 80.47 862 80.14 80.45 80.28 860 80.62 80.43 80.16 858 80.90 80.17 79.90 856 80.34 80.17 79.75 854 80.22 79.95 80.12 852 79.89 79.61 79.73 850 79.67 79.44 78.90 848 79.54 79.60 79.19 846 79.62 79.49 79.22 844 79.73 79.25 79.11 842 79.68 79.07 79.46 840 79.29 79.02 79.11 838 79.29 78.83 79.18 836 79.20 79.30 79.04 834 78.97 79.19 79.19 832 79.06 78.96 78.94 830 78.82 79.05 78.90 828 79.00 79.01 79.37 826 78.96 78.63 78.92 824 79.27 79.20 78.71 822 79.03 78.84 78.89 820 78.77 78.52 78.83 818 79.13 78.85 78.95 816 79.04 79.12 78.85 814 79.13 78.80 79.10 812 79.40 79.10 78.69 810 79.40 79.27 78.84 808 79.36 79.01 78.91 806 79.24 78.83 78.82 804 79.64 79.31 79.19 802 79.51 79.32 79.31 800 79.34 78.95 79.14 798 79.50 79.37 78.97 796 79.28 79.19 79.32 794 79.30 79.39 79.06 792 79.57 79.41 79.24 790 79.75 79.64 79.28 788 79.51 79.36 79.39 786 79.60 79.33 79.34 784 79.87 79.46 79.55 782 79.68 79.52 80.06 780 80.12 80.00 79.76 778 79.98 79.92 79.88 776 80.17 79.75 80.05 774 80.34 79.83 79.87 772 80.24 80.08 80.29 770 80.37 80.15 80.21 768 80.39 80.14 79.93 766 80.34 79.97 80.21 764 80.30 80.16 80.45 762 80.32 80.23 80.45 760 80.61 80.28 80.40 758 80.61 80.34 80.47 756 80.55 80.39 80.32 754 80.61 80.65 80.38 752 80.65 80.56 80.55 750 80.96 80.61 80.55 748 81.10 80.85 80.84 746 80.86 80.63 80.73 744 80.88 80.56 80.78 742 80.91 80.83 80.88 740 80.84 81.03 80.77 738 81.11 80.81 80.91 736 81.04 80.96 80.81 734 81.07 81.12 80.92 732 81.07 80.96 80.98 730 81.35 80.85 80.96 728 81.32 80.97 81.09 726 81.22 80.91 80.92 724 81.26 81.14 81.04 722 81.59 81.06 81.09 720 81.32 81.09 81.20 718 81.52 81.26 81.09 716 81.45 81.28 81.20 714 81.57 81.15 81.37 712 81.40 81.14 81.36 710 81.57 81.18 81.38 708 81.70 81.26 81.36 706 81.57 81.33 81.46 704 81.52 81.44 81.27 702 81.62 81.19 81.39 700 81.50 81.23 81.45 698 81.66 81.42 81.47 696 81.64 81.32 81.46 694 81.56 81.38 81.58 692 81.80 81.45 81.51 690 81.73 81.73 81.49 688 81.79 81.38 81.56 686 81.71 81.62 81.59 684 81.94 81.41 81.52 682 81.73 81.44 81.44 680 81.79 81.46 81.70 678 81.51 81.45 81.66 676 81.85 81.59 81.64 674 82.08 81.50 81.64 672 81.92 81.48 81.62 670 81.77 81.56 81.79 668 81.82 81.76 81.51 666 81.91 81.61 81.66 664 81.75 81.62 81.63 662 81.78 81.39 81.65 660 81.84 81.56 81.75 658 81.84 81.40 81.55 656 82.02 81.41 81.61 654 81.89 81.75 81.66 652 81.97 81.59 81.55 650 81.86 81.46 81.64 648 81.74 81.41 81.59 646 82.03 81.54 81.63 644 81.94 81.48 81.65 642 82.13 81.56 81.78 640 81.90 81.66 81.57 638 81.97 81.63 81.91 636 81.86 81.70 81.58 634 81.97 81.60 81.69 632 81.90 81.55 81.64 630 81.97 81.57 81.74 628 81.93 81.91 81.80 626 81.96 81.67 81.56 624 81.90 81.68 81.61 622 82.03 81.56 81.78 620 81.94 81.51 81.78 618 81.84 81.56 81.92 616 81.92 81.62 81.77 614 82.02 81.36 81.45 612 81.95 81.56 81.71 610 81.93 81.40 81.70 608 81.83 81.58 81.66 606 81.89 81.64 81.76 604 82.16 81.63 81.83 602 82.12 81.51 81.77 600 82.01 81.62 81.75 598 81.85 81.49 81.68 596 81.74 81.61 81.73 594 81.86 81.37 81.55 592 81.91 81.43 81.41 590 82.00 81.25 81.88 588 81.86 81.49 81.69 586 81.86 81.38 81.52 584 81.98 81.26 81.53 582 81.84 81.31 81.50 580 81.97 81.57 81.48 578 82.00 81.41 81.42 576 81.98 81.32 81.36 574 81.84 81.30 81.53 572 81.80 81.38 81.59 570 81.81 81.55 81.41 568 81.85 81.46 81.28 566 81.55 81.41 81.55 564 81.77 81.44 81.37 562 81.53 81.45 81.70 560 81.69 81.23 81.44 558 81.62 81.09 81.48 556 81.63 81.13 81.30 554 81.72 81.26 81.47 552 81.60 81.16 81.28 550 81.50 81.12 81.21 548 81.65 81.13 81.11 546 81.65 81.02 81.47 544 81.48 81.10 81.25 542 81.65 81.07 80.92 540 81.45 80.87 81.24 538 81.29 81.11 81.00 536 81.41 81.18 81.28 534 81.47 81.11 81.15 532 81.41 80.91 81.04 530 81.32 81.13 81.13 528 81.31 80.84 81.34 526 81.25 80.88 81.03 524 81.08 80.93 81.06 522 81.47 80.81 80.88 520 81.09 80.88 80.84 518 80.96 80.71 81.03 516 80.91 80.79 80.85 514 81.19 80.74 80.93 512 80.93 80.84 80.98 510 81.14 80.87 80.81 508 81.11 80.63 80.83 506 81.12 80.59 80.79 504 80.81 80.52 80.64 502 80.85 80.49 80.84 500 80.73 80.44 80.62 498 80.60 80.44 80.69 496 81.00 80.37 80.81 494 80.77 80.33 80.63 492 80.74 80.25 80.39 490 80.91 80.28 80.69 488 80.86 80.31 80.44 486 80.49 80.16 80.41 484 80.80 80.04 80.48 482 80.56 80.04 80.37 480 80.79 80.09 80.58 478 80.72 79.97 80.31 476 80.56 79.95 80.31 474 80.44 79.87 80.39 472 80.38 79.98 80.23 470 80.39 79.98 80.09 468 80.59 79.58 80.20 466 80.31 79.90 80.28 464 80.40 79.63 80.08 462 80.08 79.58 80.10 460 80.41 79.69 79.98 458 80.09 79.68 80.25 456 80.32 79.91 79.96 454 80.14 79.68 79.93 452 80.01 79.49 79.76 450 79.69 79.32 79.91 448 80.00 79.21 79.56 446 80.05 79.25 79.93 444 79.83 79.44 79.76 442 79.90 79.12 79.88 440 79.79 79.35 80.16 438 79.67 79.42 79.77 436 79.66 79.21 79.43 434 79.78 78.87 79.48 432 79.34 78.98 79.54 430 79.66 78.74 79.67 428 79.43 78.91 79.18 426 79.38 79.07 79.29 424 79.57 78.81 79.19 422 78.84 78.94 79.22 420 79.14 78.68 78.92 418 79.30 78.69 79.20 416 79.02 79.02 79.40 414 79.24 78.43 79.50 412 78.93 78.31 79.08 410 78.66 78.02 79.24 408 78.72 78.48 79.18 406 78.58 77.83 79.03 404 78.66 78.12 78.90 402 78.41 78.14 79.54 400 78.72 78.30 79.21 398 78.96 77.60 79.36 396 77.81 78.31 79.46 394 78.81 78.14 78.27 392 78.57 77.86 78.59 390 78.91 77.57 79.30 388 78.23 77.52 78.47 386 78.71 77.87 78.55 384 77.27 79.01 78.20 382 78.53 77.32 79.60 380 79.83 77.33 78.38 1650 93.60 93.57 93.39 1640 93.62 93.57 93.40 1630 93.61 93.57 93.40 1620 93.61 93.57 93.40 1610 93.60 93.57 93.40 1600 93.60 93.56 93.39 1590 93.58 93.54 93.37 1580 93.56 93.52 93.36 1570 93.54 93.50 93.34 1560 93.52 93.48 93.32 1550 93.50 93.46 93.31 1540 93.48 93.43 93.28 1530 93.45 93.41 93.25 1520 93.43 93.39 93.23 1510 93.40 93.36 93.20 1500 93.38 93.34 93.19 1490 93.35 93.31 93.16 1480 93.32 93.27 93.12 1470 93.29 93.24 93.09 1460 93.26 93.21 93.05 1450 93.23 93.18 93.02 1440 93.20 93.14 92.99 1430 93.16 93.10 92.95 1420 93.12 93.07 92.92 1410 93.10 93.03 92.89 1400 93.05 92.99 92.85 1390 93.00 92.96 92.82 1380 92.97 92.91 92.77 1370 92.93 92.87 92.73 1360 92.88 92.83 92.68 1350 92.83 92.77 92.63 1340 92.78 92.72 92.58 1330 92.74 92.67 92.53 1320 92.69 92.62 92.48 1310 92.64 92.56 92.43 1300 92.59 92.51 92.38 1290 92.53 92.45 92.32 1280 92.47 92.40 92.27 1270 92.42 92.34 92.21 1260 92.36 92.27 92.14 1250 92.29 92.20 92.08 1240 92.22 92.14 92.01 1230 92.16 92.07 91.94 1220 92.08 91.99 91.86 1210 92.01 91.92 91.80 1200 91.93 91.84 91.70 1190 91.85 91.75 91.63 1180 91.76 91.67 91.54 1170 91.67 91.57 91.45 1160 91.57 91.48 91.35 1150 91.49 91.38 91.26 1140 91.37 91.27 91.14 1130 91.25 91.17 91.04 1120 91.15 91.05 90.92 1110 91.02 90.92 90.79 1100 90.89 90.78 90.67 1090 90.74 90.64 90.52 1080 90.58 90.48 90.35 1070 90.42 90.31 90.19 1060 90.25 90.14 90.02 1050 90.06 89.95 89.84 1040 89.86 89.74 89.62 1030 89.64 89.52 89.41 1020 89.40 89.27 89.17 1010 89.13 89.01 88.91 1000 88.84 88.72 88.62 990 88.54 88.40 88.30 980 88.18 88.06 87.96 970 87.81 87.65 87.58 960 87.38 87.24 87.16 950 86.92 86.78 86.68