# 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 2022-01-20 (2605 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 87.13 87.64 86.76 998 87.20 87.55 86.79 996 87.95 88.21 86.24 994 86.69 87.46 86.37 992 86.74 86.81 86.46 990 86.89 87.23 85.72 988 86.76 86.93 86.42 986 86.51 87.72 86.16 984 86.43 86.90 87.03 982 87.23 86.09 87.05 980 86.58 86.60 86.89 978 86.85 86.96 86.79 976 86.70 86.95 86.95 974 86.40 87.21 87.19 972 86.64 86.37 87.40 970 86.47 86.56 86.06 968 85.94 87.22 86.38 966 86.58 86.29 85.75 964 86.89 86.01 86.51 962 86.11 86.48 86.03 960 85.85 85.93 85.37 958 85.38 85.46 85.65 956 86.06 85.75 85.53 954 85.35 85.13 86.09 952 85.50 85.72 86.08 950 85.89 85.65 85.45 948 86.35 85.61 85.58 946 85.34 85.44 85.27 944 85.33 85.24 84.58 942 84.81 85.16 85.07 940 85.17 84.75 84.93 938 84.89 84.85 85.41 936 85.22 85.04 85.35 934 84.97 84.93 84.89 932 84.80 84.78 85.01 930 84.53 84.71 84.19 928 84.16 84.95 84.48 926 84.25 84.43 84.42 924 83.78 84.77 84.24 922 84.27 84.46 84.06 920 84.08 83.47 83.62 918 83.72 84.46 83.65 916 84.14 84.10 83.85 914 83.71 83.22 83.68 912 83.82 83.91 83.64 910 83.78 83.72 83.56 908 83.44 83.44 82.88 906 83.44 83.41 83.15 904 82.69 82.95 82.62 902 82.98 83.23 82.76 900 82.88 83.04 82.53 898 82.83 82.28 82.64 896 83.17 82.39 82.53 894 82.40 82.09 82.34 892 82.35 81.80 81.92 890 82.52 82.09 81.87 888 82.35 81.80 81.63 886 81.55 81.94 81.44 884 81.44 81.90 81.49 882 81.12 81.31 81.01 880 81.66 80.91 80.97 878 80.94 80.70 81.01 876 80.74 80.77 80.79 874 81.24 80.78 80.36 872 80.62 80.76 80.55 870 80.58 80.30 80.45 868 80.53 80.06 80.05 866 80.40 80.08 80.15 864 80.11 79.90 80.02 862 79.73 79.69 79.45 860 79.71 80.08 79.51 858 79.67 79.65 79.33 856 79.63 79.16 79.20 854 79.52 79.16 79.21 852 79.07 79.11 78.92 850 79.23 78.67 78.73 848 79.14 78.43 79.09 846 78.75 78.66 78.97 844 78.87 79.22 78.47 842 78.61 78.50 78.40 840 78.52 78.60 78.44 838 78.48 78.74 78.38 836 78.77 78.53 78.67 834 78.43 78.64 78.38 832 78.54 78.65 78.06 830 78.32 78.65 77.92 828 78.55 78.48 78.57 826 78.45 78.41 78.30 824 78.56 78.19 78.64 822 78.35 78.41 78.27 820 78.67 77.83 78.22 818 77.95 77.99 77.74 816 78.62 78.33 78.36 814 78.42 78.56 78.19 812 78.06 78.34 78.21 810 78.44 78.45 78.51 808 78.60 78.47 78.18 806 78.30 78.51 78.42 804 78.33 78.64 77.74 802 78.75 78.31 78.17 800 79.02 78.64 78.50 798 78.49 78.59 78.51 796 78.44 78.40 78.57 794 78.75 78.45 78.69 792 78.64 78.77 78.35 790 78.86 78.96 78.34 788 78.91 78.80 78.61 786 79.00 79.11 78.76 784 79.05 78.85 78.86 782 79.00 78.91 78.38 780 79.02 79.33 78.84 778 79.09 79.42 79.25 776 79.54 79.26 78.91 774 78.93 79.20 79.16 772 79.35 79.51 79.30 770 79.31 79.37 79.19 768 79.33 79.51 79.20 766 79.68 79.56 79.31 764 79.86 79.70 79.31 762 79.62 79.60 79.18 760 79.67 79.88 79.55 758 79.69 79.80 79.61 756 79.83 79.80 79.66 754 79.91 79.64 79.41 752 80.09 79.66 79.54 750 79.94 79.76 79.70 748 80.01 79.99 79.66 746 79.97 79.97 79.57 744 80.11 80.00 80.03 742 79.98 79.97 79.94 740 80.11 79.93 79.90 738 79.94 80.15 80.15 736 80.39 80.14 80.11 734 80.21 80.08 80.09 732 80.48 79.78 80.05 730 80.33 80.24 80.10 728 80.26 80.43 80.17 726 80.20 80.19 80.21 724 80.32 80.45 80.06 722 80.33 80.23 80.04 720 80.41 80.24 79.97 718 80.37 80.50 80.13 716 80.50 80.38 80.44 714 80.51 80.29 80.19 712 80.55 80.44 80.43 710 80.64 80.41 80.42 708 80.52 80.34 80.24 706 80.70 80.71 80.44 704 80.57 80.52 80.48 702 80.79 80.83 80.49 700 80.67 80.54 80.41 698 80.70 80.73 80.52 696 80.69 80.50 80.43 694 80.64 80.75 80.15 692 80.75 80.84 80.32 690 80.75 80.63 80.36 688 80.77 80.55 80.37 686 80.72 80.41 80.55 684 80.75 80.43 80.53 682 80.99 80.72 80.62 680 80.88 80.72 80.42 678 80.75 80.70 80.72 676 80.80 80.78 80.87 674 81.17 80.91 80.61 672 81.07 80.72 80.50 670 80.99 80.85 80.80 668 80.83 80.87 80.79 666 80.94 80.81 80.67 664 80.99 80.61 80.54 662 81.01 80.82 80.54 660 80.97 80.74 80.69 658 80.98 80.76 80.87 656 80.81 80.81 80.71 654 81.02 80.85 80.76 652 81.07 80.78 80.57 650 80.88 80.82 80.63 648 80.86 80.72 80.79 646 81.11 80.75 80.71 644 81.02 80.78 80.63 642 80.90 80.78 80.73 640 81.07 80.70 80.60 638 81.06 80.84 80.74 636 81.16 80.67 80.92 634 80.97 80.65 80.59 632 81.18 80.79 80.55 630 81.05 80.65 80.78 628 81.13 80.87 80.51 626 81.04 80.59 80.59 624 81.06 80.87 80.68 622 81.04 80.72 80.90 620 80.93 80.72 80.91 618 81.05 80.68 80.78 616 80.99 80.72 80.74 614 81.00 80.79 80.67 612 80.92 80.68 80.82 610 81.09 80.62 80.81 608 81.17 80.74 80.75 606 81.23 80.64 80.72 604 81.13 80.64 80.79 602 81.10 80.60 80.72 600 81.11 80.82 80.75 598 80.90 80.76 80.69 596 81.10 80.67 80.60 594 81.18 80.49 80.56 592 81.15 80.67 80.53 590 81.10 80.79 80.65 588 81.02 80.70 80.55 586 81.03 80.67 80.58 584 80.98 80.44 80.70 582 81.04 80.75 80.58 580 80.90 80.76 80.53 578 80.90 80.45 80.39 576 81.06 80.58 80.63 574 81.10 80.45 80.54 572 81.09 80.51 80.51 570 80.83 80.68 80.69 568 81.00 80.72 80.66 566 80.84 80.64 80.43 564 80.85 80.60 80.52 562 80.92 80.57 80.47 560 80.88 80.44 80.40 558 80.89 80.27 80.51 556 81.12 80.43 80.83 554 80.81 80.48 80.32 552 80.73 80.31 80.48 550 80.77 80.33 80.34 548 80.79 80.44 80.32 546 80.81 80.30 79.92 544 80.62 80.36 80.22 542 80.82 80.12 80.30 540 80.78 80.12 80.36 538 80.73 80.35 80.21 536 80.93 80.13 80.04 534 80.77 80.28 80.23 532 80.71 80.26 80.11 530 80.74 80.03 80.26 528 80.86 80.28 80.11 526 80.61 80.14 79.95 524 80.58 80.10 80.01 522 80.50 79.97 79.96 520 80.52 80.03 80.07 518 80.35 80.11 80.09 516 80.69 80.16 79.83 514 80.63 79.87 79.83 512 80.62 79.65 79.79 510 80.46 80.07 79.77 508 80.47 79.92 79.74 506 80.54 80.02 79.73 504 80.49 79.95 79.82 502 80.59 79.61 79.66 500 80.51 79.64 79.58 498 80.22 79.76 79.78 496 80.10 79.95 79.58 494 80.43 79.51 79.68 492 80.23 79.78 79.38 490 80.02 79.50 79.65 488 80.05 79.66 79.65 486 80.02 79.68 79.46 484 80.14 79.74 79.61 482 80.09 79.55 79.57 480 80.00 79.39 79.50 478 79.99 79.36 79.36 476 80.22 79.62 79.53 474 80.10 79.43 79.37 472 80.00 79.54 79.55 470 79.93 79.30 79.26 468 79.96 79.43 79.55 466 79.81 79.51 79.22 464 80.12 79.40 78.95 462 80.02 79.34 78.98 460 79.83 79.42 78.98 458 79.88 79.51 79.10 456 79.73 79.43 78.71 454 79.70 79.41 78.85 452 79.63 79.41 78.94 450 79.71 79.05 78.73 448 79.26 79.12 78.79 446 79.55 78.36 78.94 444 79.58 79.33 78.69 442 79.58 78.99 78.52 440 79.66 78.76 78.57 438 79.68 79.15 78.69 436 79.90 78.60 78.21 434 79.50 79.14 78.57 432 79.60 78.85 78.19 430 79.83 78.44 78.25 428 79.33 78.49 78.02 426 79.27 78.23 78.18 424 79.26 78.90 78.44 422 78.96 78.76 77.85 420 79.34 78.50 78.27 418 79.35 78.58 77.95 416 79.31 78.45 78.29 414 78.90 78.42 77.77 412 78.84 78.65 77.94 410 79.44 77.95 77.63 408 78.54 78.15 77.36 406 78.57 77.69 77.69 404 78.53 78.20 77.77 402 79.13 78.56 77.48 400 78.72 77.76 76.85 398 78.30 77.81 78.06 396 78.53 77.16 77.53 394 78.88 78.38 77.61 392 78.87 78.11 77.13 390 79.09 77.92 76.90 388 78.65 77.41 77.53 386 77.93 77.40 77.35 384 78.27 78.55 76.87 382 78.44 77.37 76.32 380 78.91 76.46 78.82 1650 92.94 92.82 92.80 1640 92.96 92.81 92.80 1630 92.96 92.82 92.81 1620 92.94 92.81 92.80 1610 92.95 92.82 92.79 1600 92.92 92.80 92.78 1590 92.91 92.77 92.76 1580 92.89 92.78 92.73 1570 92.86 92.73 92.71 1560 92.85 92.73 92.69 1550 92.83 92.70 92.67 1540 92.81 92.69 92.64 1530 92.78 92.66 92.63 1520 92.76 92.64 92.60 1510 92.73 92.61 92.57 1500 92.70 92.58 92.54 1490 92.67 92.55 92.51 1480 92.64 92.53 92.47 1470 92.61 92.49 92.44 1460 92.57 92.46 92.40 1450 92.54 92.43 92.36 1440 92.50 92.40 92.34 1430 92.46 92.36 92.29 1420 92.43 92.32 92.26 1410 92.40 92.29 92.21 1400 92.34 92.25 92.19 1390 92.30 92.21 92.13 1380 92.26 92.16 92.09 1370 92.22 92.13 92.04 1360 92.17 92.09 92.00 1350 92.13 92.03 91.94 1340 92.07 91.99 91.89 1330 92.04 91.94 91.82 1320 91.97 91.89 91.78 1310 91.92 91.85 91.73 1300 91.87 91.79 91.67 1290 91.80 91.73 91.62 1280 91.75 91.68 91.56 1270 91.69 91.61 91.49 1260 91.62 91.55 91.44 1250 91.57 91.50 91.35 1240 91.49 91.42 91.27 1230 91.42 91.35 91.21 1220 91.36 91.29 91.14 1210 91.27 91.21 91.05 1200 91.19 91.12 90.97 1190 91.11 91.05 90.90 1180 91.02 90.95 90.79 1170 90.92 90.86 90.70 1160 90.83 90.77 90.61 1150 90.73 90.68 90.50 1140 90.62 90.57 90.39 1130 90.52 90.46 90.29 1120 90.41 90.34 90.15 1110 90.28 90.22 90.04 1100 90.14 90.08 89.90 1090 89.99 89.93 89.75 1080 89.85 89.78 89.60 1070 89.68 89.62 89.42 1060 89.50 89.45 89.25 1050 89.31 89.26 89.04 1040 89.11 89.04 88.85 1030 88.90 88.83 88.63 1020 88.65 88.59 88.38 1010 88.40 88.35 88.12 1000 88.12 88.05 87.85 990 87.80 87.74 87.53 980 87.47 87.39 87.17 970 87.07 87.03 86.80 960 86.65 86.60 86.38 950 86.19 86.14 85.90