# 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 2023-01-11 (2961 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 86.72 87.03 86.77 998 86.75 86.72 86.07 996 85.98 86.38 86.33 994 86.81 86.29 86.49 992 86.29 86.65 86.10 990 86.98 86.43 86.04 988 86.33 86.77 85.26 986 85.83 85.92 86.70 984 86.35 86.53 86.66 982 85.86 85.92 86.94 980 86.35 85.45 86.43 978 85.61 85.55 85.54 976 85.82 85.95 85.63 974 86.37 85.52 86.44 972 86.65 86.73 86.56 970 85.79 85.48 85.70 968 86.43 85.67 86.14 966 85.49 85.69 86.91 964 86.26 85.71 86.35 962 85.43 86.38 84.40 960 85.82 85.72 85.37 958 86.16 85.64 85.94 956 85.21 85.50 86.25 954 85.24 85.64 85.06 952 85.54 85.65 85.31 950 85.55 85.40 85.09 948 85.06 85.34 85.21 946 85.27 84.78 85.00 944 85.23 84.91 85.15 942 84.56 85.38 84.81 940 84.82 84.78 84.63 938 84.88 84.51 84.92 936 84.34 84.41 84.73 934 84.11 84.92 84.16 932 83.99 84.31 84.63 930 84.59 84.47 84.71 928 83.97 83.90 84.25 926 84.19 83.75 84.06 924 83.89 83.50 84.68 922 83.77 83.73 83.43 920 83.91 83.89 83.62 918 83.31 83.99 83.65 916 83.32 83.62 83.29 914 83.55 83.43 83.32 912 83.50 83.34 83.16 910 83.17 82.84 83.22 908 83.32 83.16 83.24 906 83.05 82.44 82.57 904 83.00 82.62 82.76 902 82.18 82.11 82.43 900 82.44 82.01 82.17 898 81.98 82.10 81.86 896 81.67 82.07 81.94 894 81.70 81.90 81.44 892 81.95 81.95 81.74 890 81.45 81.29 81.70 888 81.28 81.39 81.75 886 81.20 81.39 81.41 884 81.02 81.10 81.10 882 80.80 80.58 81.11 880 80.87 80.93 81.01 878 80.46 80.71 80.47 876 80.47 80.27 80.65 874 80.20 80.14 80.43 872 80.34 80.16 80.09 870 80.31 80.10 80.15 868 79.68 80.03 79.71 866 79.75 79.87 79.64 864 79.70 79.55 79.46 862 79.20 79.25 79.83 860 79.32 78.93 79.61 858 79.16 79.10 79.44 856 78.88 78.92 78.92 854 78.80 78.99 78.88 852 78.94 78.96 79.07 850 78.78 78.95 78.78 848 78.67 78.38 78.81 846 78.43 78.29 78.61 844 78.28 78.27 78.23 842 78.27 78.12 78.21 840 78.07 78.26 78.02 838 78.40 78.21 78.56 836 78.14 78.26 78.00 834 78.01 77.90 77.81 832 77.90 78.36 78.38 830 77.44 77.77 78.33 828 78.06 78.22 78.44 826 77.82 77.94 78.00 824 77.91 78.07 77.84 822 78.17 78.00 77.84 820 77.79 78.01 77.90 818 77.78 77.71 78.02 816 77.68 77.88 77.90 814 77.58 77.88 78.07 812 77.68 77.72 77.88 810 77.78 78.35 77.85 808 77.99 78.38 77.77 806 78.38 77.75 77.86 804 77.89 78.12 78.32 802 78.06 78.16 78.25 800 77.92 78.35 78.29 798 78.03 78.48 78.19 796 78.30 78.22 78.14 794 78.20 78.21 78.35 792 78.37 78.18 78.32 790 78.31 78.79 78.56 788 78.39 78.58 78.40 786 78.58 78.34 78.82 784 78.64 78.83 78.92 782 78.63 78.73 79.12 780 78.78 78.82 78.82 778 78.64 78.41 78.99 776 78.59 78.70 78.72 774 79.05 79.07 78.81 772 78.67 78.94 79.00 770 78.85 79.16 79.07 768 78.57 78.78 79.16 766 79.07 79.16 79.02 764 79.08 79.37 79.05 762 78.99 79.39 79.52 760 79.20 79.14 79.17 758 79.19 79.41 79.50 756 79.55 79.33 79.41 754 79.58 79.88 79.44 752 79.17 79.52 79.33 750 79.10 79.86 79.60 748 79.47 79.75 79.65 746 79.60 79.52 79.66 744 79.65 79.63 79.71 742 79.75 79.79 79.68 740 79.65 79.83 79.60 738 79.39 79.70 79.68 736 79.78 79.71 79.92 734 79.72 79.85 79.66 732 79.72 79.77 79.91 730 79.75 79.85 79.73 728 79.97 80.11 79.84 726 79.83 79.85 80.07 724 79.75 80.08 80.11 722 80.04 80.11 80.04 720 79.99 80.16 80.13 718 80.07 80.09 80.40 716 80.08 80.05 80.25 714 80.10 80.01 80.17 712 80.20 80.40 80.27 710 80.17 80.06 80.31 708 80.24 80.40 80.58 706 80.15 80.13 80.37 704 80.14 80.37 80.35 702 80.16 80.42 80.43 700 80.05 80.24 80.20 698 80.20 80.26 80.54 696 80.25 80.32 80.26 694 80.18 80.33 80.43 692 80.20 80.43 80.53 690 80.13 80.40 80.70 688 80.31 80.34 80.59 686 80.16 80.34 80.54 684 80.36 80.46 80.36 682 80.23 80.52 80.33 680 80.37 80.39 80.48 678 80.40 80.31 80.41 676 80.43 80.60 80.50 674 80.43 80.56 80.47 672 80.66 80.50 80.42 670 80.40 80.44 80.49 668 80.36 80.54 80.54 666 80.43 80.41 80.63 664 80.31 80.51 80.68 662 80.36 80.33 80.70 660 80.47 80.60 80.71 658 80.44 80.42 80.33 656 80.53 80.41 80.67 654 80.39 80.48 80.45 652 80.55 80.56 80.51 650 80.66 80.57 80.71 648 80.41 80.51 80.63 646 80.53 80.53 80.50 644 80.61 80.47 80.60 642 80.47 80.41 80.62 640 80.59 80.53 80.50 638 80.55 80.51 80.60 636 80.47 80.56 80.62 634 80.40 80.52 80.61 632 80.54 80.37 80.51 630 80.57 80.55 80.65 628 80.35 80.43 80.61 626 80.40 80.55 80.68 624 80.34 80.48 80.58 622 80.63 80.53 80.52 620 80.51 80.43 80.51 618 80.51 80.44 80.65 616 80.65 80.51 80.70 614 80.52 80.58 80.70 612 80.43 80.48 80.68 610 80.61 80.56 80.72 608 80.37 80.39 80.60 606 80.56 80.64 80.60 604 80.42 80.33 80.50 602 80.40 80.50 80.43 600 80.38 80.57 80.57 598 80.41 80.20 80.62 596 80.45 80.40 80.48 594 80.52 80.48 80.49 592 80.52 80.36 80.59 590 80.42 80.38 80.33 588 80.54 80.35 80.49 586 80.51 80.28 80.56 584 80.57 80.43 80.25 582 80.37 80.31 80.47 580 80.35 80.28 80.41 578 80.18 80.40 80.38 576 80.54 80.19 80.51 574 80.58 80.20 80.26 572 80.28 80.32 80.36 570 80.41 80.11 80.30 568 80.27 80.15 80.38 566 80.26 80.19 80.21 564 80.30 80.22 80.25 562 80.36 80.09 80.23 560 80.26 79.99 80.21 558 80.43 80.07 80.20 556 80.22 80.33 80.21 554 80.46 80.27 80.22 552 80.19 80.03 80.09 550 80.22 80.10 80.13 548 80.22 80.03 80.32 546 80.22 80.08 80.09 544 80.09 80.11 80.06 542 80.12 80.02 80.13 540 80.18 79.83 79.89 538 79.98 79.86 80.00 536 80.16 79.71 80.02 534 80.01 79.94 79.81 532 79.80 79.62 80.21 530 80.29 79.86 79.79 528 80.02 79.86 79.86 526 80.14 79.99 79.83 524 80.04 79.79 79.94 522 79.94 80.01 79.82 520 79.57 79.58 79.49 518 79.87 79.58 79.55 516 79.57 79.54 79.75 514 79.74 79.70 79.59 512 79.56 79.67 79.65 510 79.61 79.54 79.78 508 79.45 79.55 79.53 506 79.68 79.43 79.64 504 79.63 79.39 79.41 502 79.66 79.35 79.55 500 79.59 79.35 79.34 498 79.62 79.53 79.19 496 79.42 79.49 79.33 494 79.51 79.22 79.25 492 79.44 79.26 79.32 490 79.45 79.24 79.22 488 79.31 79.18 79.05 486 79.39 79.21 79.26 484 79.35 79.22 79.07 482 79.50 79.31 79.13 480 79.47 79.13 79.04 478 79.43 79.20 79.18 476 79.56 79.10 79.12 474 79.24 79.19 78.78 472 79.04 78.92 78.78 470 79.44 79.06 78.74 468 79.26 79.02 78.88 466 79.07 78.88 78.94 464 79.02 78.91 78.59 462 79.12 78.96 79.09 460 79.03 78.91 78.63 458 79.19 78.95 78.63 456 78.80 78.70 78.53 454 78.97 78.97 78.39 452 78.90 78.76 78.30 450 78.80 78.47 78.50 448 79.10 78.27 78.23 446 79.16 78.65 78.50 444 78.96 78.59 78.40 442 78.93 78.37 78.19 440 78.66 78.61 78.28 438 78.34 78.35 78.40 436 78.57 78.09 78.14 434 78.16 78.16 77.68 432 78.40 78.06 77.92 430 78.33 78.07 77.99 428 78.39 77.91 77.88 426 78.53 78.52 77.50 424 78.02 78.34 78.22 422 78.30 78.13 77.78 420 78.23 77.83 78.13 418 78.29 78.01 77.82 416 77.95 76.77 77.65 414 77.79 77.77 77.29 412 77.72 77.76 77.11 410 77.51 77.30 77.91 408 78.07 77.42 77.32 406 77.16 77.05 76.96 404 77.48 77.75 77.56 402 77.90 77.27 77.25 400 77.53 77.25 77.15 398 77.60 76.99 77.25 396 77.45 77.06 77.16 394 77.65 76.75 76.51 392 77.54 77.41 76.91 390 77.11 75.84 77.47 388 77.02 76.87 77.41 386 77.38 76.65 76.68 384 77.09 76.18 76.42 382 78.41 76.65 76.99 380 77.41 77.88 77.22 1650 92.60 92.62 92.53 1640 92.62 92.61 92.54 1630 92.61 92.61 92.54 1620 92.60 92.61 92.52 1610 92.60 92.60 92.54 1600 92.59 92.58 92.51 1590 92.57 92.56 92.49 1580 92.55 92.54 92.47 1570 92.52 92.53 92.46 1560 92.51 92.50 92.45 1550 92.49 92.46 92.42 1540 92.44 92.46 92.39 1530 92.44 92.43 92.38 1520 92.41 92.40 92.34 1510 92.38 92.36 92.32 1500 92.35 92.34 92.29 1490 92.32 92.29 92.27 1480 92.29 92.27 92.23 1470 92.26 92.23 92.20 1460 92.22 92.20 92.17 1450 92.18 92.16 92.14 1440 92.15 92.11 92.10 1430 92.12 92.09 92.07 1420 92.08 92.05 92.03 1410 92.04 92.00 91.98 1400 92.00 91.95 91.95 1390 91.95 91.91 91.90 1380 91.90 91.87 91.87 1370 91.87 91.82 91.82 1360 91.82 91.79 91.76 1350 91.76 91.74 91.73 1340 91.73 91.69 91.67 1330 91.68 91.64 91.63 1320 91.62 91.58 91.59 1310 91.56 91.52 91.53 1300 91.50 91.48 91.48 1290 91.44 91.41 91.43 1280 91.39 91.35 91.36 1270 91.32 91.29 91.30 1260 91.27 91.23 91.24 1250 91.19 91.16 91.17 1240 91.11 91.09 91.10 1230 91.04 91.03 91.03 1220 90.98 90.95 90.96 1210 90.88 90.86 90.89 1200 90.79 90.79 90.82 1190 90.72 90.70 90.71 1180 90.64 90.60 90.62 1170 90.53 90.52 90.53 1160 90.43 90.43 90.45 1150 90.34 90.32 90.35 1140 90.22 90.22 90.24 1130 90.11 90.10 90.12 1120 89.98 89.98 90.01 1110 89.87 89.86 89.89 1100 89.71 89.73 89.76 1090 89.58 89.58 89.61 1080 89.41 89.41 89.45 1070 89.26 89.26 89.28 1060 89.08 89.08 89.11 1050 88.88 88.89 88.92 1040 88.67 88.68 88.70 1030 88.46 88.45 88.49 1020 88.22 88.21 88.25 1010 87.95 87.94 87.99 1000 87.66 87.65 87.69 990 87.33 87.35 87.38 980 87.00 87.00 87.05 970 86.61 86.60 86.67 960 86.19 86.18 86.24 950 85.73 85.73 85.78