# 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 2025-12-12 (4027 days after) # Measured one times # Data between 950 nm and 1650 nm are also available (SPS-XWW). # Contact: Hirofumi Okita (okita14@naoj.org) # # Wavelength (nm) #1 1000 83.45 998 83.13 996 83.59 994 83.08 992 83.36 990 83.97 988 83.22 986 82.26 984 83.08 982 82.67 980 82.70 978 82.22 976 82.38 974 82.27 972 82.46 970 82.43 968 82.30 966 82.48 964 81.86 962 81.28 960 82.87 958 82.42 956 81.72 954 81.67 952 82.28 950 81.79 948 81.70 946 81.68 944 81.95 942 81.39 940 80.92 938 81.07 936 80.91 934 80.75 932 80.93 930 80.92 928 81.10 926 80.92 924 80.26 922 79.69 920 80.34 918 80.83 916 79.79 914 79.83 912 79.70 910 79.77 908 79.29 906 79.62 904 79.04 902 78.79 900 79.38 898 79.01 896 78.44 894 78.47 892 78.60 890 78.32 888 78.16 886 77.84 884 77.60 882 77.50 880 77.43 878 77.39 876 77.09 874 77.26 872 76.80 870 76.50 868 76.53 866 76.22 864 76.28 862 76.26 860 76.31 858 76.03 856 75.71 854 75.98 852 75.41 850 75.63 848 75.73 846 75.44 844 75.06 842 75.40 840 75.13 838 74.98 836 74.71 834 75.00 832 75.03 830 74.75 828 74.88 826 74.80 824 74.77 822 74.85 820 74.78 818 74.72 816 74.81 814 74.69 812 74.84 810 74.81 808 74.60 806 75.06 804 75.03 802 74.77 800 74.96 798 74.77 796 75.28 794 75.28 792 74.97 790 75.33 788 75.27 786 75.54 784 75.29 782 75.25 780 75.18 778 75.72 776 75.88 774 75.62 772 75.41 770 75.44 768 75.91 766 75.77 764 75.71 762 75.77 760 76.14 758 76.21 756 76.19 754 76.22 752 76.45 750 76.31 748 76.08 746 76.45 744 76.42 742 76.30 740 76.55 738 76.58 736 76.57 734 76.47 732 76.44 730 76.67 728 76.89 726 76.81 724 76.82 722 76.77 720 76.76 718 76.93 716 76.88 714 76.94 712 77.08 710 77.06 708 76.94 706 76.68 704 76.99 702 77.10 700 77.00 698 77.06 696 77.08 694 77.12 692 77.15 690 76.95 688 77.01 686 77.22 684 77.07 682 77.16 680 77.06 678 77.03 676 77.06 674 77.10 672 76.92 670 77.27 668 77.34 666 77.21 664 77.26 662 77.32 660 77.24 658 77.26 656 77.07 654 77.44 652 77.23 650 77.15 648 77.11 646 77.17 644 77.10 642 77.27 640 77.39 638 77.23 636 77.33 634 77.21 632 77.12 630 77.12 628 77.33 626 77.26 624 77.27 622 77.38 620 77.41 618 77.23 616 77.19 614 77.22 612 77.36 610 77.09 608 77.19 606 77.29 604 77.39 602 77.34 600 77.20 598 77.29 596 77.20 594 77.28 592 77.19 590 77.05 588 76.94 586 77.02 584 77.09 582 76.92 580 77.02 578 77.17 576 77.13 574 77.12 572 76.87 570 77.24 568 76.90 566 76.90 564 77.07 562 76.95 560 76.96 558 76.81 556 76.86 554 76.95 552 77.02 550 76.74 548 76.93 546 77.04 544 76.78 542 76.83 540 76.84 538 76.92 536 76.67 534 76.65 532 76.72 530 76.68 528 76.66 526 76.63 524 76.65 522 76.92 520 76.75 518 76.67 516 76.41 514 76.59 512 76.47 510 76.39 508 76.43 506 76.53 504 76.39 502 76.39 500 76.34 498 76.35 496 76.26 494 76.11 492 76.20 490 76.17 488 76.31 486 75.85 484 76.15 482 76.02 480 76.19 478 76.00 476 75.92 474 75.83 472 76.07 470 75.82 468 76.09 466 75.84 464 75.49 462 75.91 460 75.86 458 75.82 456 75.58 454 75.64 452 75.50 450 75.51 448 75.67 446 75.60 444 75.78 442 75.43 440 75.63 438 75.27 436 75.39 434 75.55 432 75.89 430 75.55 428 75.12 426 75.20 424 75.14 422 75.13 420 74.93 418 75.32 416 75.35 414 74.99 412 74.62 410 75.45 408 74.43 406 74.35 404 75.34 402 74.62 400 74.72 398 74.85 396 74.61 394 74.95 392 73.90 390 74.46 388 74.60 386 74.07 384 73.99 382 74.08 380 74.24 1650 89.66 1640 89.65 1630 89.63 1620 89.63 1610 89.63 1600 89.60 1590 89.58 1580 89.53 1570 89.53 1560 89.49 1550 89.46 1540 89.43 1530 89.40 1520 89.34 1510 89.32 1500 89.28 1490 89.24 1480 89.19 1470 89.15 1460 89.10 1450 89.08 1440 89.03 1430 88.98 1420 88.94 1410 88.88 1400 88.83 1390 88.77 1380 88.74 1370 88.69 1360 88.63 1350 88.57 1340 88.51 1330 88.45 1320 88.40 1310 88.32 1300 88.26 1290 88.20 1280 88.13 1270 88.06 1260 87.98 1250 87.90 1240 87.83 1230 87.75 1220 87.67 1210 87.57 1200 87.48 1190 87.38 1180 87.29 1170 87.17 1160 87.07 1150 86.97 1140 86.84 1130 86.72 1120 86.61 1110 86.45 1100 86.31 1090 86.14 1080 85.99 1070 85.81 1060 85.62 1050 85.42 1040 85.20 1030 84.98 1020 84.74 1010 84.46 1000 84.16 990 83.84 980 83.49 970 83.12 960 82.68 950 82.23