# 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 2023-07-13 (3144 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 85.54 85.25 85.60 998 85.76 85.68 86.00 996 86.12 85.96 85.96 994 85.77 86.67 85.95 992 85.84 85.43 86.14 990 86.19 85.44 85.95 988 86.42 85.70 85.89 986 86.50 86.29 85.56 984 85.37 85.46 86.33 982 85.44 85.83 86.20 980 85.13 85.47 86.16 978 86.20 85.83 86.18 976 85.68 84.52 85.39 974 85.54 85.37 86.23 972 85.58 85.41 85.57 970 85.83 85.30 85.65 968 85.51 85.35 84.87 966 85.74 84.89 85.23 964 84.89 85.04 85.00 962 85.18 85.78 85.46 960 85.72 84.90 85.51 958 85.47 84.78 85.51 956 84.83 85.53 84.96 954 85.18 84.93 85.31 952 85.22 84.82 84.76 950 85.56 84.80 84.69 948 84.66 84.92 84.64 946 84.35 84.70 84.18 944 84.17 84.43 84.03 942 84.41 84.58 84.67 940 84.43 84.40 84.39 938 84.34 84.17 84.08 936 84.10 84.71 83.97 934 83.90 84.14 83.85 932 84.17 83.52 84.14 930 83.71 83.80 84.14 928 83.57 83.81 83.98 926 83.37 83.58 83.95 924 83.73 83.35 83.61 922 84.04 83.27 83.30 920 83.54 83.08 82.86 918 83.47 83.09 83.56 916 83.22 83.15 82.55 914 82.91 82.79 82.96 912 82.78 82.98 82.62 910 82.57 82.61 83.02 908 82.36 82.09 82.47 906 82.52 82.32 82.36 904 82.52 82.00 82.04 902 82.02 81.84 81.85 900 82.07 82.05 82.12 898 81.96 81.87 81.74 896 81.57 81.59 81.92 894 81.50 81.24 81.28 892 81.20 80.80 81.34 890 81.23 81.09 80.98 888 81.22 80.39 81.09 886 80.64 80.83 80.96 884 80.70 80.71 80.83 882 80.48 80.27 80.52 880 80.63 79.80 80.04 878 79.90 79.99 79.96 876 80.09 79.96 80.31 874 80.15 79.83 79.74 872 79.90 79.34 79.44 870 79.61 79.45 79.85 868 79.52 79.27 79.57 866 79.15 78.98 79.43 864 79.08 79.43 79.23 862 79.19 79.16 79.22 860 79.00 78.65 78.68 858 78.79 78.67 79.13 856 78.87 78.68 78.51 854 78.69 78.53 78.59 852 78.51 78.09 78.79 850 78.62 78.09 78.17 848 78.14 78.31 77.95 846 78.34 77.86 78.11 844 78.05 78.16 78.04 842 77.85 77.58 78.04 840 77.91 77.56 77.69 838 78.19 77.80 77.85 836 77.56 77.95 78.00 834 77.62 77.71 77.28 832 77.47 77.64 77.51 830 77.89 77.34 77.40 828 77.74 77.42 77.84 826 77.76 77.82 77.91 824 77.23 77.21 77.90 822 77.85 77.33 77.60 820 77.52 77.16 77.42 818 77.36 77.46 77.35 816 77.65 77.52 76.98 814 77.59 77.35 77.50 812 77.17 77.47 77.50 810 77.58 77.33 77.75 808 77.32 77.59 77.73 806 77.38 77.36 77.76 804 78.00 77.54 77.63 802 77.70 77.58 77.80 800 77.93 77.82 78.08 798 77.58 77.88 77.75 796 78.16 77.52 77.44 794 78.08 77.92 77.72 792 77.92 77.90 78.05 790 78.12 77.90 78.06 788 77.98 77.79 78.02 786 78.20 78.01 77.87 784 78.29 77.97 78.09 782 78.36 78.01 78.33 780 78.52 78.26 78.28 778 78.39 78.33 78.48 776 78.59 78.66 78.30 774 78.68 78.34 78.55 772 78.75 78.70 78.76 770 78.78 78.39 78.73 768 78.78 78.58 78.66 766 78.89 78.35 78.90 764 78.85 78.70 78.80 762 78.85 78.58 78.75 760 78.98 78.79 79.14 758 79.39 78.84 78.98 756 79.27 78.94 79.03 754 79.16 79.03 78.84 752 78.82 78.91 78.95 750 78.91 78.98 79.19 748 79.28 79.04 79.09 746 79.09 79.08 79.24 744 79.44 78.93 79.23 742 79.38 79.15 79.30 740 79.53 79.11 79.13 738 79.24 79.34 79.85 736 79.51 79.41 79.44 734 79.53 79.35 79.32 732 79.69 79.10 79.30 730 79.67 79.42 79.38 728 79.54 79.43 79.70 726 79.47 79.43 79.63 724 79.65 79.26 79.61 722 79.89 79.64 79.58 720 79.78 79.40 79.66 718 79.53 79.87 79.66 716 79.68 79.38 80.07 714 79.85 79.51 79.55 712 79.77 79.68 79.66 710 80.10 79.60 79.83 708 80.14 79.62 79.71 706 79.89 79.93 79.74 704 80.02 79.55 79.61 702 79.90 79.71 79.78 700 79.95 79.70 79.91 698 80.02 79.91 79.76 696 79.91 79.93 79.96 694 80.05 79.79 80.02 692 80.01 79.81 80.20 690 80.14 79.81 80.03 688 80.01 79.92 79.85 686 80.08 79.78 79.94 684 80.06 79.80 79.88 682 80.08 79.70 79.90 680 79.99 79.64 80.05 678 79.86 79.95 80.07 676 80.18 79.66 80.14 674 80.11 79.77 80.05 672 80.03 79.64 80.13 670 80.38 79.89 80.04 668 80.05 79.97 80.10 666 80.12 80.02 80.00 664 80.07 79.89 80.30 662 79.92 79.65 80.21 660 79.97 79.81 80.05 658 79.87 80.04 80.07 656 80.17 79.91 80.08 654 80.25 79.86 80.12 652 80.26 80.04 79.96 650 80.22 79.84 80.18 648 80.07 80.13 80.29 646 80.33 79.93 80.08 644 80.22 79.97 80.09 642 80.11 79.92 80.18 640 80.20 79.97 80.29 638 80.26 79.82 80.21 636 80.20 79.80 80.23 634 80.26 79.84 80.25 632 80.17 79.88 80.18 630 80.17 79.98 80.06 628 80.40 79.76 80.22 626 80.27 79.81 80.12 624 80.22 79.94 80.22 622 80.34 79.93 80.09 620 80.18 79.99 80.15 618 80.25 79.90 80.08 616 80.01 79.99 80.34 614 80.20 79.71 80.10 612 80.35 79.88 80.24 610 80.13 79.86 80.18 608 80.24 79.74 80.17 606 80.14 79.80 79.84 604 80.10 79.83 80.11 602 80.06 79.96 80.15 600 80.10 79.71 80.10 598 80.08 79.98 80.01 596 80.13 79.81 79.94 594 80.02 79.90 79.87 592 80.06 79.98 79.93 590 80.10 79.78 80.07 588 79.93 79.74 79.89 586 80.01 79.85 79.86 584 79.94 79.55 79.86 582 80.15 79.84 79.81 580 80.11 79.65 79.83 578 79.82 79.59 79.85 576 80.11 79.76 79.67 574 80.04 79.66 79.94 572 80.00 79.74 79.88 570 79.95 79.70 79.72 568 79.87 79.56 79.73 566 79.81 79.62 79.63 564 79.88 79.61 79.85 562 79.79 79.62 79.78 560 79.81 79.55 79.85 558 79.86 79.44 79.60 556 79.94 79.54 79.53 554 79.92 79.30 79.73 552 79.81 79.45 79.64 550 79.75 79.60 79.53 548 79.73 79.61 79.33 546 79.80 79.52 79.70 544 79.97 79.41 79.70 542 79.89 79.36 79.65 540 79.86 79.39 79.48 538 79.63 79.32 79.33 536 79.85 79.50 79.56 534 79.72 79.37 79.34 532 79.64 79.24 79.16 530 79.71 79.22 79.20 528 79.43 79.31 79.26 526 79.73 79.17 79.19 524 79.54 79.30 79.20 522 79.48 79.01 79.33 520 79.54 79.16 79.14 518 79.49 79.03 79.26 516 79.43 78.81 79.11 514 79.46 79.12 79.08 512 79.32 79.07 79.09 510 79.26 78.97 79.07 508 79.09 79.03 78.86 506 79.32 78.73 78.88 504 79.08 78.96 78.91 502 79.17 79.01 78.90 500 79.23 78.85 78.82 498 79.19 78.75 78.61 496 79.30 78.87 78.77 494 79.01 78.70 78.67 492 78.86 78.73 78.83 490 79.05 78.52 78.59 488 79.13 78.66 78.47 486 79.22 78.57 78.76 484 78.87 78.35 78.63 482 78.80 78.54 78.19 480 78.89 78.61 78.33 478 78.76 78.70 78.47 476 78.83 78.41 78.51 474 78.70 78.69 78.52 472 79.07 78.54 78.30 470 78.90 78.05 78.14 468 78.51 78.29 78.24 466 78.49 78.51 78.13 464 78.64 78.33 78.20 462 78.67 78.43 78.20 460 78.22 78.27 77.98 458 78.19 78.30 78.24 456 78.62 77.96 77.90 454 78.65 77.89 77.75 452 78.67 78.05 77.79 450 78.55 78.15 78.07 448 78.30 78.08 78.08 446 78.43 77.87 77.68 444 78.39 78.20 77.60 442 78.15 77.58 77.40 440 78.48 77.96 77.52 438 78.57 77.82 77.77 436 78.00 77.47 77.22 434 78.08 77.77 77.70 432 78.17 77.60 77.71 430 77.92 77.29 77.11 428 78.22 77.61 77.53 426 78.02 76.97 77.44 424 77.86 77.02 77.29 422 77.83 77.78 77.23 420 77.71 77.42 77.38 418 77.68 76.64 77.24 416 78.21 77.73 76.73 414 77.73 76.78 76.68 412 77.38 77.11 76.44 410 77.22 76.94 76.64 408 77.37 76.56 77.12 406 77.55 77.10 77.22 404 77.88 76.05 75.90 402 77.42 76.40 76.32 400 77.34 76.92 76.98 398 77.50 76.61 76.65 396 77.76 76.79 75.29 394 77.24 76.58 76.33 392 77.09 76.56 76.14 390 76.82 76.78 76.25 388 77.14 76.18 76.42 386 77.22 76.00 76.25 384 77.06 75.36 75.85 382 76.66 76.53 75.67 380 76.32 76.82 75.91 1650 92.27 92.18 92.18 1640 92.24 92.18 92.18 1630 92.25 92.17 92.17 1620 92.26 92.17 92.16 1610 92.23 92.16 92.16 1600 92.23 92.15 92.13 1590 92.20 92.14 92.12 1580 92.19 92.11 92.09 1570 92.17 92.08 92.08 1560 92.15 92.06 92.07 1550 92.12 92.04 92.03 1540 92.10 92.02 92.01 1530 92.08 91.99 91.99 1520 92.05 91.95 91.96 1510 92.03 91.92 91.92 1500 91.99 91.88 91.90 1490 91.95 91.86 91.86 1480 91.92 91.82 91.84 1470 91.89 91.80 91.80 1460 91.87 91.75 91.77 1450 91.82 91.73 91.73 1440 91.79 91.67 91.70 1430 91.75 91.64 91.65 1420 91.71 91.60 91.63 1410 91.67 91.56 91.58 1400 91.63 91.52 91.55 1390 91.59 91.47 91.50 1380 91.54 91.43 91.45 1370 91.49 91.38 91.42 1360 91.45 91.33 91.37 1350 91.41 91.28 91.32 1340 91.36 91.22 91.27 1330 91.30 91.17 91.22 1320 91.25 91.12 91.17 1310 91.20 91.06 91.12 1300 91.14 91.01 91.06 1290 91.08 90.95 91.01 1280 91.03 90.89 90.96 1270 90.96 90.82 90.89 1260 90.90 90.76 90.84 1250 90.83 90.68 90.76 1240 90.75 90.61 90.69 1230 90.68 90.54 90.63 1220 90.61 90.46 90.56 1210 90.53 90.37 90.47 1200 90.44 90.29 90.40 1190 90.37 90.21 90.32 1180 90.26 90.10 90.21 1170 90.18 90.02 90.12 1160 90.07 89.93 90.03 1150 89.97 89.81 89.94 1140 89.87 89.70 89.82 1130 89.76 89.58 89.72 1120 89.63 89.48 89.59 1110 89.51 89.35 89.46 1100 89.37 89.20 89.32 1090 89.23 89.06 89.19 1080 89.07 88.90 89.03 1070 88.91 88.73 88.86 1060 88.73 88.55 88.67 1050 88.53 88.36 88.48 1040 88.33 88.14 88.28 1030 88.10 87.92 88.05 1020 87.87 87.67 87.80 1010 87.59 87.40 87.56 1000 87.30 87.11 87.25 990 86.99 86.79 86.95 980 86.64 86.45 86.59 970 86.27 86.09 86.21 960 85.82 85.65 85.79 950 85.36 85.18 85.33