# 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 2022-10-06 (2864 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 86.03 87.21 86.48 998 86.83 86.43 86.69 996 87.20 86.23 87.78 994 87.46 86.24 87.59 992 86.90 86.32 86.40 990 85.65 86.42 87.15 988 86.10 86.51 86.53 986 86.65 86.55 86.88 984 85.58 86.62 86.88 982 86.52 86.93 86.26 980 86.76 86.63 86.56 978 86.51 86.63 86.61 976 86.45 86.41 86.75 974 86.73 85.89 86.55 972 86.33 86.04 87.27 970 86.26 86.18 87.02 968 85.75 85.80 86.58 966 85.86 85.61 85.76 964 86.39 85.95 86.06 962 86.04 85.28 85.99 960 86.19 85.17 86.11 958 85.77 85.58 85.72 956 85.48 85.20 85.68 954 85.28 85.87 85.83 952 86.18 85.17 85.55 950 85.73 85.89 85.74 948 85.59 85.39 85.12 946 85.74 85.37 85.18 944 85.69 85.00 85.01 942 85.66 84.87 85.33 940 85.43 84.60 84.93 938 84.99 84.74 84.79 936 84.79 84.70 85.16 934 85.09 84.49 84.53 932 85.34 84.81 84.54 930 84.65 84.86 84.26 928 84.35 84.22 84.57 926 84.70 84.06 84.23 924 84.72 84.15 84.06 922 84.46 83.43 83.98 920 83.89 83.83 84.19 918 84.01 83.59 83.98 916 83.89 83.56 83.97 914 83.68 82.80 83.60 912 83.46 83.49 83.82 910 83.34 82.93 83.40 908 83.23 82.91 83.34 906 82.94 82.99 83.41 904 82.85 82.79 83.30 902 82.82 82.48 82.72 900 82.57 82.32 82.82 898 82.55 82.04 82.26 896 82.34 82.54 82.20 894 82.52 81.94 81.95 892 81.65 81.54 81.77 890 81.93 81.44 81.43 888 81.51 81.66 82.17 886 81.40 81.22 81.23 884 81.63 81.31 81.54 882 81.40 81.22 81.38 880 81.27 80.92 81.18 878 80.81 80.78 80.82 876 80.76 80.89 80.44 874 80.75 80.49 80.51 872 80.47 80.23 80.79 870 80.68 80.09 80.60 868 80.11 80.40 80.28 866 79.76 79.77 79.79 864 79.98 79.99 80.02 862 79.60 79.81 79.55 860 79.49 79.77 79.67 858 79.79 79.45 79.68 856 79.36 79.28 79.22 854 79.54 79.17 79.14 852 79.05 78.95 79.09 850 79.08 78.60 79.23 848 78.74 78.86 78.95 846 78.85 78.45 78.54 844 78.63 78.62 78.85 842 78.85 78.68 78.34 840 78.17 78.77 78.67 838 78.47 78.55 78.33 836 78.27 78.24 78.23 834 78.74 78.12 78.22 832 78.58 78.16 78.24 830 77.85 78.12 78.44 828 78.27 77.87 78.26 826 77.80 78.00 78.48 824 78.46 77.87 78.24 822 78.38 78.14 78.45 820 78.42 78.51 78.06 818 78.32 78.47 77.98 816 78.50 77.99 78.23 814 78.68 78.03 78.01 812 78.22 78.22 77.80 810 78.75 77.69 77.92 808 78.27 78.12 78.14 806 78.08 78.38 78.35 804 78.37 78.30 78.26 802 78.08 78.42 78.50 800 78.45 78.45 78.28 798 78.51 78.49 78.90 796 78.60 78.61 78.53 794 78.71 78.50 78.57 792 78.88 78.46 78.45 790 78.66 78.22 79.16 788 78.78 78.90 79.03 786 78.92 78.64 78.83 784 79.03 78.82 79.14 782 79.04 78.78 78.98 780 78.84 78.78 78.90 778 79.17 78.81 79.08 776 79.40 78.92 79.09 774 79.09 79.05 79.20 772 79.27 79.28 78.73 770 79.59 79.24 79.39 768 79.49 79.44 79.26 766 79.52 79.47 79.46 764 79.55 79.33 79.31 762 79.73 79.39 79.44 760 79.69 79.83 79.52 758 79.44 79.73 79.47 756 79.69 79.49 79.29 754 79.71 79.51 79.84 752 79.83 79.26 79.63 750 79.77 79.58 80.15 748 79.84 79.54 79.71 746 80.04 79.69 79.80 744 79.97 79.82 79.91 742 80.06 79.91 80.09 740 79.96 79.90 79.73 738 80.05 79.85 79.98 736 80.24 79.77 79.94 734 80.16 79.94 80.15 732 80.10 79.93 80.21 730 80.50 80.04 80.15 728 80.31 80.07 80.17 726 80.34 80.03 80.19 724 80.21 80.03 80.19 722 80.60 80.19 80.49 720 80.71 80.42 80.40 718 80.40 80.35 80.39 716 80.42 80.37 80.18 714 80.34 80.17 80.47 712 80.39 80.38 80.26 710 80.58 80.39 80.47 708 80.52 80.62 80.19 706 80.54 80.14 80.52 704 80.78 80.36 80.46 702 80.71 80.29 80.53 700 80.68 80.46 80.51 698 80.65 80.39 80.61 696 80.65 80.45 80.49 694 80.75 80.34 80.43 692 80.58 80.43 80.55 690 80.78 80.57 80.49 688 80.74 80.63 80.56 686 80.79 80.62 80.52 684 80.92 80.40 80.47 682 80.68 80.38 80.75 680 80.78 80.57 80.67 678 80.74 80.52 80.66 676 81.01 80.47 80.55 674 80.67 80.41 80.47 672 80.79 80.54 80.65 670 80.67 80.78 80.73 668 80.77 80.62 80.50 666 80.76 80.62 80.67 664 80.71 80.80 80.68 662 81.04 80.69 80.83 660 80.81 80.67 80.53 658 81.04 80.78 80.65 656 80.99 80.58 80.66 654 80.91 80.55 80.78 652 80.88 80.60 80.80 650 80.96 80.63 80.63 648 80.78 80.66 80.71 646 80.97 80.80 80.79 644 80.73 80.46 80.65 642 80.82 80.51 80.61 640 80.97 80.59 80.70 638 80.93 80.56 80.74 636 80.93 80.70 80.76 634 80.85 80.60 80.70 632 81.06 80.58 80.77 630 80.97 80.56 80.67 628 80.99 80.60 80.89 626 80.90 80.78 80.70 624 80.83 80.60 80.64 622 80.97 80.97 80.74 620 80.98 80.45 80.85 618 81.06 80.75 80.83 616 80.83 80.49 80.62 614 80.78 80.71 80.69 612 81.06 80.54 80.61 610 80.83 80.52 80.74 608 80.74 80.69 80.71 606 80.98 80.72 80.68 604 81.01 80.69 80.55 602 80.87 80.51 80.73 600 80.97 80.56 80.85 598 80.86 80.60 80.78 596 81.12 80.46 80.70 594 80.99 80.44 80.80 592 80.79 80.51 80.65 590 80.89 80.47 80.55 588 81.15 80.44 80.65 586 80.82 80.39 80.56 584 80.74 80.72 80.62 582 80.90 80.56 80.58 580 81.01 80.43 80.36 578 80.87 80.40 80.30 576 81.00 80.36 80.56 574 80.60 80.39 80.59 572 80.91 80.37 80.50 570 80.62 80.42 80.61 568 80.93 80.42 80.43 566 80.82 80.36 80.28 564 80.66 80.40 80.47 562 80.66 80.44 80.42 560 80.86 80.47 80.12 558 80.66 80.33 80.16 556 80.78 80.19 80.08 554 80.46 80.12 80.40 552 80.60 80.10 80.23 550 80.76 80.22 80.07 548 80.44 80.19 80.14 546 80.52 79.96 80.26 544 80.77 79.94 80.18 542 80.69 79.96 80.15 540 80.50 79.98 80.00 538 80.60 80.04 80.13 536 80.45 79.90 79.82 534 80.52 79.73 79.86 532 80.28 79.91 79.84 530 80.44 80.08 79.95 528 80.22 80.01 79.80 526 80.41 79.63 79.80 524 80.33 79.77 79.82 522 80.31 79.72 79.81 520 80.30 79.70 79.86 518 80.25 79.73 79.75 516 80.26 79.78 79.64 514 80.28 79.71 79.47 512 80.27 79.77 79.48 510 80.30 79.64 79.70 508 80.10 79.47 79.60 506 80.15 79.46 79.33 504 80.00 79.71 79.36 502 80.02 79.46 79.25 500 80.03 79.20 79.50 498 79.95 79.20 79.23 496 79.91 79.37 79.16 494 79.90 79.30 79.20 492 79.76 79.22 79.12 490 80.14 79.23 79.36 488 80.02 79.36 79.36 486 79.78 79.19 79.00 484 79.62 79.02 79.08 482 79.75 79.02 79.10 480 79.85 78.92 79.11 478 79.78 79.02 78.90 476 79.66 79.34 78.84 474 79.53 79.15 78.89 472 79.57 78.85 78.92 470 79.71 78.89 78.96 468 79.73 78.55 78.87 466 79.48 79.01 78.83 464 79.49 78.72 78.79 462 79.52 78.85 78.69 460 79.24 78.31 78.74 458 79.63 78.39 78.52 456 79.21 78.55 78.59 454 79.57 78.30 78.86 452 79.26 78.88 78.26 450 79.34 78.49 78.49 448 79.03 78.52 78.33 446 79.05 78.41 78.59 444 79.08 78.27 78.07 442 79.32 78.15 78.32 440 78.93 78.21 78.34 438 79.06 77.92 78.13 436 78.84 78.20 77.93 434 79.28 78.04 78.25 432 79.05 77.90 77.85 430 78.32 78.65 77.80 428 78.56 77.65 78.46 426 78.65 78.17 77.72 424 78.86 77.79 78.00 422 78.59 77.78 77.84 420 78.19 78.18 78.01 418 78.14 78.11 77.73 416 78.46 77.76 77.29 414 78.22 77.99 77.60 412 78.29 77.22 77.53 410 77.95 77.54 77.47 408 78.15 77.48 77.32 406 77.75 77.02 77.24 404 78.40 78.00 76.87 402 77.86 76.14 76.94 400 78.03 77.27 76.92 398 77.71 77.48 76.85 396 77.57 77.18 77.07 394 77.73 76.59 77.07 392 77.72 76.96 77.51 390 77.82 76.90 77.24 388 77.85 77.81 77.49 386 77.22 77.67 76.72 384 77.69 76.82 77.27 382 77.96 77.04 76.41 380 77.22 76.45 76.64 1650 92.74 92.52 92.78 1640 92.73 92.52 92.79 1630 92.71 92.51 92.80 1620 92.73 92.51 92.77 1610 92.73 92.50 92.77 1600 92.71 92.50 92.76 1590 92.68 92.48 92.74 1580 92.68 92.47 92.73 1570 92.66 92.43 92.70 1560 92.64 92.42 92.68 1550 92.61 92.40 92.66 1540 92.58 92.38 92.64 1530 92.56 92.34 92.62 1520 92.55 92.32 92.58 1510 92.51 92.30 92.56 1500 92.47 92.27 92.53 1490 92.45 92.24 92.50 1480 92.43 92.22 92.46 1470 92.40 92.18 92.44 1460 92.36 92.15 92.40 1450 92.33 92.11 92.37 1440 92.29 92.08 92.33 1430 92.26 92.04 92.30 1420 92.23 92.01 92.27 1410 92.19 91.98 92.22 1400 92.15 91.93 92.20 1390 92.11 91.91 92.15 1380 92.07 91.86 92.11 1370 92.03 91.83 92.08 1360 92.00 91.78 92.02 1350 91.93 91.71 91.97 1340 91.89 91.66 91.91 1330 91.83 91.62 91.86 1320 91.77 91.57 91.82 1310 91.73 91.52 91.76 1300 91.67 91.46 91.70 1290 91.62 91.41 91.65 1280 91.56 91.35 91.59 1270 91.50 91.29 91.52 1260 91.44 91.23 91.47 1250 91.39 91.17 91.41 1240 91.31 91.11 91.33 1230 91.25 91.03 91.26 1220 91.16 90.96 91.19 1210 91.10 90.89 91.11 1200 91.01 90.81 91.03 1190 90.92 90.72 90.95 1180 90.84 90.63 90.85 1170 90.75 90.56 90.76 1160 90.65 90.46 90.66 1150 90.56 90.36 90.57 1140 90.46 90.26 90.45 1130 90.35 90.15 90.35 1120 90.23 90.03 90.23 1110 90.10 89.90 90.10 1100 89.98 89.76 89.95 1090 89.83 89.63 89.82 1080 89.68 89.47 89.67 1070 89.51 89.32 89.50 1060 89.35 89.13 89.33 1050 89.15 88.95 89.13 1040 88.95 88.74 88.92 1030 88.72 88.53 88.71 1020 88.49 88.29 88.45 1010 88.23 88.02 88.19 1000 87.94 87.75 87.91 990 87.63 87.43 87.61 980 87.29 87.08 87.26 970 86.91 86.71 86.89 960 86.49 86.28 86.46 950 86.02 85.83 85.96