# 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 2024-08-12 (3540 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 85.58 85.20 84.45 998 85.33 85.10 85.38 996 86.34 85.78 85.72 994 86.01 85.84 85.04 992 84.90 84.74 86.30 990 85.26 85.19 85.59 988 85.15 85.02 85.87 986 85.95 86.10 85.21 984 85.12 85.44 85.05 982 84.95 86.00 85.17 980 85.46 85.57 84.98 978 85.07 84.28 85.43 976 84.89 85.05 84.54 974 84.97 84.57 85.13 972 84.56 84.99 85.18 970 85.38 85.14 84.43 968 85.33 84.09 84.82 966 84.46 84.18 84.33 964 84.77 84.91 84.43 962 85.05 85.18 84.77 960 84.04 84.85 84.77 958 84.19 84.38 84.62 956 84.76 83.85 84.28 954 84.05 84.71 83.90 952 84.28 84.56 84.33 950 84.00 83.56 83.73 948 84.09 84.04 84.24 946 84.00 84.17 84.23 944 83.90 83.98 83.89 942 84.07 84.15 83.49 940 83.90 84.39 84.33 938 83.87 83.49 83.59 936 83.67 83.88 83.44 934 83.72 83.44 82.78 932 83.98 83.40 83.53 930 83.32 83.39 83.04 928 83.04 83.08 83.15 926 82.88 82.56 82.83 924 83.08 82.63 82.62 922 83.06 82.66 82.38 920 82.87 82.07 82.17 918 82.58 82.14 82.32 916 82.65 82.39 81.87 914 82.11 82.04 82.08 912 82.16 81.60 81.97 910 82.02 81.57 81.84 908 81.95 82.03 81.72 906 82.12 81.56 81.44 904 81.93 81.06 81.05 902 81.51 81.42 81.01 900 81.19 81.24 81.08 898 81.35 80.96 81.03 896 81.36 80.79 81.20 894 81.10 80.78 80.73 892 80.95 80.45 80.48 890 80.88 79.99 79.98 888 80.58 80.07 80.16 886 80.21 80.33 80.13 884 80.49 80.04 79.81 882 79.96 80.13 79.70 880 80.35 79.65 79.76 878 79.69 79.62 79.82 876 79.55 79.35 79.10 874 79.27 79.43 79.32 872 79.47 79.16 79.12 870 79.37 79.10 78.85 868 78.58 78.59 78.96 866 78.64 78.72 78.52 864 78.57 78.60 78.00 862 78.49 78.80 78.22 860 78.60 78.08 78.50 858 78.43 78.21 78.06 856 78.11 78.22 77.86 854 78.06 77.80 77.93 852 77.67 77.96 77.77 850 77.96 77.79 77.42 848 78.20 77.81 77.36 846 77.80 77.87 77.46 844 77.93 77.51 77.52 842 77.75 77.36 77.17 840 77.47 77.34 76.69 838 77.17 77.18 76.99 836 76.97 77.11 77.10 834 77.49 77.22 76.93 832 77.65 77.24 77.13 830 77.21 76.92 77.00 828 77.32 76.75 76.76 826 76.89 77.06 76.89 824 77.35 77.02 76.61 822 77.20 76.96 76.62 820 77.01 76.93 77.06 818 76.82 76.91 76.59 816 77.62 76.94 76.79 814 77.20 76.77 77.04 812 77.20 76.75 77.31 810 77.10 76.85 76.78 808 77.30 77.18 76.91 806 77.29 76.91 77.68 804 77.85 77.09 77.13 802 77.31 77.00 77.00 800 77.36 77.42 76.82 798 77.38 77.37 77.49 796 77.32 77.39 77.19 794 77.82 77.19 77.20 792 77.76 76.97 77.33 790 77.85 77.43 77.25 788 77.75 77.62 77.65 786 77.99 77.73 77.44 784 77.46 77.64 77.60 782 78.05 77.68 77.46 780 78.04 77.86 77.78 778 78.36 77.95 77.87 776 78.11 78.04 77.97 774 78.20 77.85 77.79 772 78.33 77.84 77.99 770 78.30 77.98 77.80 768 78.51 78.05 77.97 766 78.48 78.38 78.07 764 78.58 78.40 78.25 762 78.35 78.23 78.32 760 78.89 78.26 78.28 758 78.67 78.21 78.40 756 78.67 78.40 78.29 754 78.90 78.56 78.42 752 78.68 78.23 78.33 750 78.80 78.58 78.44 748 78.75 78.64 78.45 746 78.92 78.54 78.47 744 78.98 78.44 78.44 742 79.21 78.53 78.68 740 79.12 78.64 78.86 738 79.05 78.52 78.79 736 79.23 78.80 79.12 734 79.14 78.95 78.79 732 79.21 78.69 78.83 730 79.39 78.72 78.80 728 79.41 79.11 78.68 726 79.19 79.04 78.95 724 79.30 79.04 79.11 722 79.38 79.24 78.79 720 79.41 79.07 79.16 718 79.56 79.23 79.23 716 79.47 79.13 79.35 714 79.44 79.03 79.11 712 79.60 79.12 79.19 710 79.54 79.32 79.18 708 79.56 79.55 78.99 706 79.51 79.10 79.16 704 79.53 79.25 79.46 702 79.63 79.25 79.33 700 79.81 79.12 79.14 698 79.61 79.52 79.32 696 79.74 79.41 79.15 694 79.71 79.68 79.14 692 79.65 79.30 79.25 690 79.66 79.44 79.34 688 79.65 79.38 79.19 686 79.79 79.27 79.08 684 79.79 79.26 79.36 682 79.52 79.37 79.33 680 79.84 79.25 79.11 678 79.87 79.43 79.38 676 79.79 79.41 79.30 674 79.75 79.33 79.28 672 79.76 79.54 79.43 670 79.84 79.48 79.23 668 79.95 79.50 79.33 666 79.83 79.38 79.24 664 79.80 79.47 79.12 662 79.93 79.51 79.39 660 79.70 79.50 79.34 658 79.82 79.26 79.29 656 79.74 79.56 79.41 654 79.95 79.54 79.37 652 79.99 79.45 79.32 650 79.62 79.29 79.31 648 79.91 79.37 79.54 646 79.69 79.39 79.24 644 79.81 79.58 79.25 642 79.66 79.39 79.25 640 79.86 79.48 79.28 638 80.05 79.10 79.41 636 79.78 79.35 79.32 634 79.74 79.48 79.12 632 79.80 79.30 79.27 630 79.88 79.41 79.10 628 79.76 79.36 79.43 626 80.03 79.49 79.36 624 79.84 79.41 79.25 622 79.76 79.42 79.43 620 80.07 79.50 79.29 618 79.79 79.33 79.27 616 79.81 79.26 79.33 614 79.92 79.44 79.13 612 79.83 79.43 79.19 610 79.85 79.26 79.17 608 79.84 79.34 79.38 606 79.77 79.15 79.02 604 79.74 79.37 79.07 602 79.76 79.37 79.16 600 79.81 79.18 79.26 598 79.78 79.30 79.20 596 79.85 79.11 79.22 594 79.86 79.11 79.23 592 79.71 79.23 79.21 590 79.75 79.29 79.01 588 79.67 79.17 78.98 586 79.69 79.01 79.10 584 79.62 78.92 79.34 582 79.58 79.13 78.93 580 79.81 79.07 79.13 578 79.63 79.06 78.96 576 79.76 78.89 79.16 574 79.66 79.12 79.03 572 79.57 79.10 78.94 570 79.40 78.98 78.99 568 79.74 78.97 78.83 566 79.40 79.07 78.91 564 79.60 78.87 78.74 562 79.56 78.97 78.93 560 79.33 78.82 78.66 558 79.38 78.87 79.03 556 79.35 78.81 78.69 554 79.46 78.77 78.79 552 79.51 78.71 78.75 550 79.50 78.92 78.85 548 79.26 78.67 78.82 546 79.37 78.72 78.61 544 79.47 78.66 78.94 542 79.29 78.67 78.68 540 79.44 78.62 78.69 538 79.30 78.65 78.56 536 79.29 78.51 78.59 534 79.18 78.71 78.53 532 79.21 78.55 78.47 530 79.31 78.48 78.49 528 79.25 78.66 78.66 526 79.00 78.37 78.67 524 79.07 78.16 78.35 522 79.12 78.51 78.49 520 79.09 78.39 78.42 518 79.12 78.51 78.35 516 79.04 78.37 78.34 514 78.97 78.23 78.23 512 79.02 78.45 78.24 510 78.98 78.21 78.26 508 78.82 78.10 78.26 506 78.97 77.97 78.07 504 78.89 78.01 77.98 502 78.75 78.15 78.18 500 78.89 77.96 78.30 498 78.99 78.14 78.05 496 78.67 77.80 78.02 494 78.48 77.77 78.17 492 78.74 77.93 77.89 490 78.85 77.98 78.08 488 78.51 78.05 77.93 486 78.71 77.91 77.79 484 78.50 77.66 77.93 482 78.72 77.63 78.00 480 78.62 77.81 77.49 478 78.86 77.58 77.61 476 78.84 77.54 77.74 474 78.42 77.38 77.41 472 78.57 77.59 77.58 470 78.46 77.62 77.67 468 78.57 77.40 77.56 466 78.31 77.47 77.50 464 78.17 77.61 77.57 462 78.21 77.25 77.24 460 78.27 77.21 77.31 458 78.26 77.30 77.66 456 78.08 77.56 77.26 454 77.86 77.58 77.37 452 78.00 77.19 77.24 450 78.25 77.09 77.15 448 78.25 77.29 77.52 446 77.79 77.55 77.30 444 77.71 77.24 77.19 442 78.06 76.81 77.19 440 77.89 76.70 76.81 438 78.32 76.89 77.31 436 77.81 76.90 77.27 434 78.20 76.79 77.23 432 77.57 76.44 77.13 430 77.40 76.48 76.86 428 78.04 76.65 76.91 426 77.71 76.68 76.89 424 77.45 76.36 77.06 422 77.74 76.44 77.09 420 77.35 76.71 76.71 418 77.57 76.12 76.71 416 77.67 76.68 76.08 414 77.64 76.11 76.76 412 77.00 76.12 76.59 410 76.88 76.08 76.64 408 77.54 76.31 76.34 406 77.37 76.14 76.86 404 77.47 76.25 76.05 402 77.00 76.56 76.96 400 77.11 76.15 75.98 398 77.17 76.36 76.37 396 76.28 76.48 73.85 394 76.23 75.80 76.70 392 77.04 76.36 75.85 390 76.09 75.64 76.15 388 75.87 75.85 75.91 386 76.77 76.54 75.95 384 76.65 76.00 75.62 382 76.74 75.90 76.25 380 77.33 75.17 75.49 1650 91.54 91.48 91.31 1640 91.55 91.50 91.31 1630 91.53 91.48 91.31 1620 91.55 91.48 91.29 1610 91.51 91.46 91.29 1600 91.50 91.44 91.26 1590 91.49 91.43 91.25 1580 91.46 91.41 91.23 1570 91.45 91.38 91.22 1560 91.42 91.35 91.18 1550 91.41 91.33 91.16 1540 91.37 91.30 91.13 1530 91.37 91.29 91.11 1520 91.31 91.25 91.08 1510 91.30 91.21 91.05 1500 91.26 91.19 91.01 1490 91.24 91.15 90.98 1480 91.20 91.11 90.95 1470 91.16 91.08 90.91 1460 91.12 91.03 90.88 1450 91.09 91.01 90.85 1440 91.06 90.97 90.82 1430 91.01 90.93 90.77 1420 90.98 90.89 90.73 1410 90.94 90.85 90.70 1400 90.90 90.82 90.66 1390 90.85 90.77 90.62 1380 90.80 90.72 90.58 1370 90.77 90.67 90.54 1360 90.73 90.63 90.49 1350 90.68 90.58 90.42 1340 90.63 90.53 90.37 1330 90.56 90.47 90.32 1320 90.52 90.41 90.27 1310 90.47 90.37 90.21 1300 90.41 90.31 90.15 1290 90.36 90.25 90.09 1280 90.30 90.19 90.04 1270 90.23 90.13 89.97 1260 90.17 90.06 89.91 1250 90.11 90.00 89.83 1240 90.02 89.93 89.76 1230 89.96 89.86 89.68 1220 89.89 89.77 89.60 1210 89.81 89.70 89.53 1200 89.73 89.62 89.45 1190 89.65 89.53 89.36 1180 89.56 89.44 89.27 1170 89.47 89.34 89.17 1160 89.37 89.26 89.07 1150 89.28 89.15 88.98 1140 89.18 89.05 88.88 1130 89.07 88.93 88.77 1120 88.95 88.81 88.64 1110 88.83 88.68 88.51 1100 88.69 88.56 88.39 1090 88.55 88.41 88.26 1080 88.41 88.25 88.08 1070 88.24 88.08 87.91 1060 88.07 87.90 87.74 1050 87.87 87.71 87.57 1040 87.68 87.50 87.36 1030 87.47 87.28 87.13 1020 87.22 87.04 86.88 1010 86.96 86.78 86.65 1000 86.68 86.48 86.34 990 86.37 86.16 86.03 980 86.02 85.82 85.68 970 85.64 85.44 85.28 960 85.25 85.01 84.88 950 84.78 84.55 84.43