# Subaru Telescope Primary Mirror Witness Sample Reflectivity # Coated with Aluminum on 2017-10-20 # Opened the vacuum chamber on 2017-11-21 # Measured with Hitachi U-4001 spectrophotometer on 2017-12-26 # Averaved four measurements on a witness sample # Contact: Hirofumi Okita (okita14@naoj.org) # # Wavelength (nm) Mean SD 2600 0.9700 0.0031 2595 0.9720 0.0018 2590 0.9693 0.0026 2585 0.9652 0.0035 2580 0.9649 0.0013 2575 0.9668 0.0016 2570 0.9659 0.0023 2565 0.9627 0.0007 2560 0.9662 0.0021 2555 0.9637 0.0009 2550 0.9678 0.0007 2545 0.9681 0.0008 2540 0.9670 0.0017 2535 0.9660 0.0019 2530 0.9671 0.0013 2525 0.9662 0.0007 2520 0.9686 0.0010 2515 0.9673 0.0008 2510 0.9694 0.0011 2505 0.9689 0.0005 2500 0.9692 0.0004 2495 0.9703 0.0011 2490 0.9692 0.0004 2485 0.9689 0.0013 2480 0.9710 0.0010 2475 0.9717 0.0003 2470 0.9705 0.0009 2465 0.9711 0.0005 2460 0.9706 0.0002 2455 0.9711 0.0007 2450 0.9710 0.0010 2445 0.9706 0.0005 2440 0.9716 0.0004 2435 0.9710 0.0009 2430 0.9709 0.0006 2425 0.9715 0.0004 2420 0.9708 0.0006 2415 0.9714 0.0002 2410 0.9714 0.0004 2405 0.9711 0.0006 2400 0.9717 0.0006 2395 0.9710 0.0006 2390 0.9720 0.0010 2385 0.9709 0.0006 2380 0.9717 0.0006 2375 0.9716 0.0006 2370 0.9712 0.0007 2365 0.9720 0.0005 2360 0.9723 0.0004 2355 0.9715 0.0004 2350 0.9722 0.0006 2345 0.9717 0.0006 2340 0.9716 0.0007 2335 0.9720 0.0005 2330 0.9719 0.0007 2325 0.9723 0.0003 2320 0.9719 0.0007 2315 0.9727 0.0003 2310 0.9723 0.0006 2305 0.9724 0.0003 2300 0.9725 0.0007 2295 0.9727 0.0005 2290 0.9723 0.0010 2285 0.9728 0.0003 2280 0.9720 0.0003 2275 0.9716 0.0009 2270 0.9725 0.0003 2265 0.9726 0.0004 2260 0.9722 0.0006 2255 0.9724 0.0005 2250 0.9728 0.0006 2245 0.9721 0.0007 2240 0.9733 0.0009 2235 0.9731 0.0007 2230 0.9727 0.0007 2225 0.9723 0.0007 2220 0.9727 0.0005 2215 0.9727 0.0004 2210 0.9716 0.0008 2205 0.9722 0.0007 2200 0.9720 0.0005 2195 0.9713 0.0005 2190 0.9718 0.0004 2185 0.9719 0.0005 2180 0.9716 0.0008 2175 0.9715 0.0004 2170 0.9718 0.0004 2165 0.9723 0.0006 2160 0.9720 0.0005 2155 0.9721 0.0003 2150 0.9719 0.0006 2145 0.9723 0.0004 2140 0.9722 0.0002 2135 0.9718 0.0006 2130 0.9723 0.0006 2125 0.9726 0.0006 2120 0.9725 0.0002 2115 0.9729 0.0004 2110 0.9715 0.0004 2105 0.9723 0.0007 2100 0.9721 0.0006 2095 0.9726 0.0005 2090 0.9721 0.0003 2085 0.9717 0.0001 2080 0.9720 0.0005 2075 0.9721 0.0004 2070 0.9719 0.0003 2065 0.9726 0.0003 2060 0.9723 0.0004 2055 0.9719 0.0004 2050 0.9722 0.0004 2045 0.9723 0.0005 2040 0.9718 0.0005 2035 0.9724 0.0004 2030 0.9723 0.0002 2025 0.9722 0.0005 2020 0.9722 0.0004 2015 0.9725 0.0005 2010 0.9721 0.0003 2005 0.9723 0.0004 2000 0.9721 0.0003 1995 0.9720 0.0005 1990 0.9724 0.0003 1985 0.9720 0.0004 1980 0.9723 0.0004 1975 0.9723 0.0001 1970 0.9725 0.0004 1965 0.9721 0.0003 1960 0.9729 0.0004 1955 0.9724 0.0003 1950 0.9728 0.0003 1945 0.9724 0.0005 1940 0.9733 0.0001 1935 0.9731 0.0003 1930 0.9730 0.0002 1925 0.9730 0.0003 1920 0.9729 0.0005 1915 0.9724 0.0005 1910 0.9726 0.0004 1905 0.9723 0.0005 1900 0.9718 0.0005 1895 0.9721 0.0006 1890 0.9719 0.0005 1885 0.9717 0.0007 1880 0.9723 0.0003 1875 0.9722 0.0003 1870 0.9723 0.0004 1865 0.9722 0.0005 1860 0.9720 0.0003 1855 0.9721 0.0004 1850 0.9716 0.0004 1845 0.9715 0.0005 1840 0.9715 0.0004 1835 0.9715 0.0005 1830 0.9716 0.0006 1825 0.9713 0.0004 1820 0.9710 0.0005 1815 0.9709 0.0004 1810 0.9707 0.0004 1805 0.9713 0.0003 1800 0.9708 0.0005 1795 0.9710 0.0003 1790 0.9714 0.0005 1785 0.9716 0.0003 1780 0.9714 0.0003 1775 0.9714 0.0004 1770 0.9715 0.0003 1765 0.9713 0.0004 1760 0.9712 0.0002 1755 0.9715 0.0004 1750 0.9711 0.0005 1745 0.9715 0.0003 1740 0.9712 0.0005 1735 0.9715 0.0003 1730 0.9715 0.0003 1725 0.9712 0.0003 1720 0.9717 0.0005 1715 0.9713 0.0004 1710 0.9712 0.0003 1705 0.9713 0.0003 1700 0.9714 0.0003 1695 0.9712 0.0004 1690 0.9713 0.0004 1685 0.9714 0.0003 1680 0.9712 0.0003 1675 0.9713 0.0004 1670 0.9714 0.0004 1665 0.9711 0.0002 1660 0.9715 0.0004 1655 0.9715 0.0002 1650 0.9711 0.0004 1645 0.9711 0.0004 1640 0.9708 0.0004 1635 0.9705 0.0004 1630 0.9706 0.0002 1625 0.9705 0.0004 1620 0.9705 0.0003 1615 0.9702 0.0002 1610 0.9702 0.0002 1605 0.9706 0.0002 1600 0.9703 0.0002 1595 0.9704 0.0004 1590 0.9702 0.0002 1585 0.9705 0.0003 1580 0.9701 0.0003 1575 0.9704 0.0003 1570 0.9700 0.0002 1565 0.9699 0.0003 1560 0.9699 0.0003 1555 0.9700 0.0004 1550 0.9695 0.0002 1545 0.9695 0.0002 1540 0.9698 0.0003 1535 0.9698 0.0003 1530 0.9695 0.0002 1525 0.9698 0.0004 1520 0.9695 0.0002 1515 0.9697 0.0003 1510 0.9697 0.0004 1505 0.9693 0.0003 1500 0.9696 0.0003 1495 0.9695 0.0002 1490 0.9694 0.0004 1485 0.9691 0.0002 1480 0.9693 0.0002 1475 0.9692 0.0002 1470 0.9691 0.0002 1465 0.9691 0.0002 1460 0.9689 0.0002 1455 0.9687 0.0002 1450 0.9690 0.0002 1445 0.9686 0.0002 1440 0.9687 0.0002 1435 0.9686 0.0003 1430 0.9685 0.0003 1425 0.9687 0.0003 1420 0.9685 0.0003 1415 0.9684 0.0002 1410 0.9684 0.0003 1405 0.9686 0.0002 1400 0.9683 0.0002 1395 0.9683 0.0003 1390 0.9683 0.0002 1385 0.9681 0.0002 1380 0.9679 0.0002 1375 0.9672 0.0003 1370 0.9672 0.0002 1365 0.9668 0.0003 1360 0.9666 0.0004 1355 0.9665 0.0003 1350 0.9664 0.0004 1345 0.9662 0.0004 1340 0.9659 0.0004 1335 0.9665 0.0001 1330 0.9662 0.0004 1325 0.9661 0.0001 1320 0.9662 0.0003 1315 0.9662 0.0002 1310 0.9659 0.0002 1305 0.9659 0.0003 1300 0.9657 0.0001 1295 0.9656 0.0002 1290 0.9654 0.0002 1285 0.9651 0.0003 1280 0.9647 0.0002 1275 0.9648 0.0002 1270 0.9650 0.0002 1265 0.9646 0.0001 1260 0.9644 0.0004 1255 0.9642 0.0002 1250 0.9638 0.0002 1245 0.9638 0.0003 1240 0.9638 0.0001 1235 0.9635 0.0004 1230 0.9632 0.0003 1225 0.9630 0.0001 1220 0.9630 0.0003 1215 0.9628 0.0001 1210 0.9622 0.0002 1205 0.9622 0.0002 1200 0.9618 0.0003 1195 0.9617 0.0002 1190 0.9613 0.0003 1185 0.9611 0.0001 1180 0.9609 0.0001 1175 0.9604 0.0002 1170 0.9602 0.0002 1165 0.9598 0.0002 1160 0.9597 0.0002 1155 0.9593 0.0002 1150 0.9589 0.0002 1145 0.9586 0.0002 1140 0.9582 0.0002 1135 0.9578 0.0002 1130 0.9573 0.0002 1125 0.9569 0.0002 1120 0.9568 0.0002 1115 0.9564 0.0001 1110 0.9558 0.0001 1105 0.9555 0.0002 1100 0.9550 0.0003 1095 0.9547 0.0002 1090 0.9541 0.0002 1085 0.9537 0.0001 1080 0.9531 0.0001 1075 0.9526 0.0002 1070 0.9519 0.0001 1065 0.9512 0.0001 1060 0.9507 0.0002 1055 0.9499 0.0001 1050 0.9491 0.0003 1045 0.9482 0.0001 1040 0.9477 0.0001 1035 0.9471 0.0001 1030 0.9462 0.0001 1025 0.9453 0.0002 1020 0.9443 0.0002 1015 0.9434 0.0002 1010 0.9425 0.0001 1005 0.9416 0.0001 1000 0.9402 0.0001 995 0.9391 0.0001 990 0.9382 0.0001 985 0.9367 0.0003 980 0.9352 0.0002 975 0.9337 0.0001 970 0.9320 0.0004 965 0.9304 0.0008 960 0.9281 0.0015 955 0.9260 0.0026 950 0.9236 0.0041 945 0.9205 0.0061 940 0.9171 0.0085 935 0.9136 0.0117 930 0.9102 0.0146 925 0.9062 0.0180 920 0.9029 0.0209 915 0.9001 0.0228 910 0.8986 0.0227 905 0.8984 0.0213 900 0.9041 0.0094 895 0.8951 0.0111 890 0.8817 0.0061 885 0.8719 0.0043 880 0.8738 0.0032 875 0.8747 0.0034 870 0.8623 0.0041 865 0.8633 0.0016 860 0.8621 0.0038 855 0.8562 0.0025 850 0.8550 0.0026 845 0.8523 0.0024 840 0.8534 0.0029 835 0.8554 0.0025 830 0.8517 0.0026 825 0.8508 0.0017 820 0.8545 0.0031 815 0.8518 0.0017 810 0.8516 0.0019 805 0.8526 0.0031 800 0.8565 0.0013 795 0.8531 0.0023 790 0.8580 0.0017 785 0.8622 0.0005 780 0.8586 0.0013 775 0.8636 0.0017 770 0.8659 0.0008 765 0.8680 0.0002 760 0.8690 0.0010 755 0.8704 0.0010 750 0.8730 0.0011 745 0.8708 0.0019 740 0.8748 0.0014 735 0.8762 0.0012 730 0.8797 0.0006 725 0.8802 0.0010 720 0.8816 0.0003 715 0.8816 0.0009 710 0.8838 0.0006 705 0.8848 0.0010 700 0.8858 0.0006 695 0.8882 0.0009 690 0.8874 0.0013 685 0.8890 0.0008 680 0.8896 0.0010 675 0.8896 0.0009 670 0.8920 0.0011 665 0.8942 0.0004 660 0.8932 0.0006 655 0.8944 0.0006 650 0.8942 0.0007 645 0.8957 0.0005 640 0.8978 0.0007 635 0.8974 0.0006 630 0.8980 0.0005 625 0.8989 0.0012 620 0.9000 0.0003 615 0.8991 0.0005 610 0.9004 0.0003 605 0.9001 0.0008 600 0.9021 0.0004 595 0.9020 0.0007 590 0.9016 0.0004 585 0.9034 0.0007 580 0.9035 0.0008 575 0.9032 0.0009 570 0.9045 0.0005 565 0.9059 0.0006 560 0.9053 0.0010 555 0.9061 0.0005 550 0.9050 0.0009 545 0.9070 0.0002 540 0.9067 0.0005 535 0.9067 0.0002 530 0.9071 0.0008 525 0.9073 0.0004 520 0.9069 0.0007 515 0.9081 0.0010 510 0.9098 0.0005 505 0.9090 0.0009 500 0.9091 0.0017 495 0.9093 0.0012 490 0.9093 0.0008 485 0.9080 0.0011 480 0.9110 0.0010 475 0.9117 0.0010 470 0.9110 0.0006 465 0.9131 0.0009 460 0.9125 0.0006 455 0.9115 0.0009 450 0.9110 0.0009 445 0.9118 0.0016 440 0.9135 0.0010 435 0.9126 0.0007 430 0.9141 0.0006 425 0.9095 0.0010 420 0.9138 0.0018 415 0.9125 0.0024 410 0.9102 0.0013 405 0.9142 0.0029 400 0.9129 0.0014 395 0.9165 0.0002 390 0.9115 0.0021 385 0.9135 0.0020 380 0.9121 0.0019 375 0.9176 0.0010 370 0.9120 0.0019 365 0.9142 0.0035 360 0.9173 0.0030 355 0.9029 0.0054 350 0.9263 0.0039 345 0.9063 0.0076 340 0.9060 0.0057 335 0.9051 0.0096 330 0.9142 0.0114 325 0.9014 0.0067 320 0.9226 0.0008 315 0.9147 0.0027 310 0.9115 0.0030 305 0.9114 0.0028 300 0.9095 0.0025