MTF> MFR 100.
MTF> PLO FRE Y
WARNING - At least 3 focal positions are recommended for finding best focus
APERTURE STOP
SEMI-DIAMETER = 4.489186
(Based on the maximum reference ray height at the stop.)
X and Y focal lengths for each field angle
X 0.499969E+02 0.517701E+02 0.538569E+02
Y 0.499969E+02 0.556946E+02 0.633075E+02
X and Y F-numbers for each field angle
X 4.499692 4.659279 4.847088
Y 4.499692 5.153604 7.145553
Reference sphere radius for each field angle
0.523489E+02 0.541108E+02 0.561527E+02
Relative execution time = 1.06 UNITS
POSITION 1 DIFFRACTION MTF ORA 1-Jun-99
Cooke Triplet f/4.5
WAVELENGTH WEIGHT NO. OF RAYS
FIELD (X,Y)=( 0.00, 0.00)MAX, ( 0.00, 0.00)DEG 656.3 NM 1 1396
RELATIVE ILLUMINATION =100.0 PER CENT 546.1 NM 2 2024
ILLUMINATION (UNIT BRIGHTNESS) = 0.038693 486.1 NM 1 2584
DISTORTION = 0.00 PER CENT
DIFFRACTION LIMIT FOCUS POSITION
Formula Actual 0.00000
L/MM f/4.500 RAD TAN RAD TAN
---- ---------------- ---------
0 .999 .999 .999
8 .974 .975 .966
16 .949 .949 .923
24 .923 .924 .876
32 .898 .898 .827
40 .872 .873 .778
48 .847 .847 .728
56 .821 .822 .678
64 .796 .797 .629
72 .771 .771 .582
80 .746 .746 .537
88 .721 .721 .495
96 .696 .696 .457
POSITION 1 DIFFRACTION MTF ORA 1-Jun-99
Cooke Triplet f/4.5
WAVELENGTH WEIGHT NO. OF RAYS
FIELD (X,Y)=( 0.00, 0.69)MAX, ( 0.00, 14.00)DEG 656.3 NM 1 1226
RELATIVE ILLUMINATION = 87.4 PER CENT 546.1 NM 2 1770
ILLUMINATION (UNIT BRIGHTNESS) = 0.033812 486.1 NM 1 2242
DISTORTION = 0.49 PER CENT
DIFFRACTION LIMIT FOCUS POSITION
Formula Actual 0.00000
L/MM f/4.500 RAD TAN RAD TAN
---- ---------------- ---------
0 .999 .999 .999 .999 .999
8 .974 .974 .971 .860 .659
16 .949 .949 .942 .562 .444
24 .923 .923 .913 .253 .405
32 .898 .898 .884 .054 .356
40 .872 .872 .855 .001 .311
48 .847 .847 .827 .047 .282
56 .821 .821 .798 .110 .262
64 .796 .796 .770 .136 .243
72 .771 .771 .741 .114 .224
80 .746 .745 .713 .067 .205
88 .721 .720 .685 .027 .188
96 .696 .695 .658 .007 .172
POSITION 1 DIFFRACTION MTF ORA 1-Jun-99
Cooke Triplet f/4.5
WAVELENGTH WEIGHT NO. OF RAYS
FIELD (X,Y)=( 0.00, 1.00)MAX, ( 0.00, 20.00)DEG 656.3 NM 1 864
RELATIVE ILLUMINATION = 61.4 PER CENT 546.1 NM 2 1240
ILLUMINATION (UNIT BRIGHTNESS) = 0.023762 486.1 NM 1 1578
DISTORTION = 1.25 PER CENT
DIFFRACTION LIMIT FOCUS POSITION
Formula Actual 0.00000
L/MM f/4.500 RAD TAN RAD TAN
---- ---------------- ---------
0 .999 .999 .999 .999 .999
8 .974 .974 .960 .815 .710
16 .949 .947 .921 .457 .344
24 .923 .921 .881 .138 .264
32 .898 .894 .841 .013 .200
40 .872 .868 .802 .002 .169
48 .847 .842 .762 .073 .149
56 .821 .816 .723 .117 .121
64 .796 .790 .684 .104 .095
72 .771 .764 .644 .060 .086
80 .746 .737 .605 .022 .085
88 .721 .711 .567 .006 .079
96 .696 .685 .529 .010 .071
Maintained by John Loomis, last updated 1 June 1999