.CS: 3.5
[Enter the spherical aberration coefficient in mm.]
.LAMBDA: 0.037
[Enter the electron wavelength in Angstroems.]
.LOWER DEFOCUS LIMIT: -1800.
[Enter the lower defocus limit in Angstroems.]
.UPPER DEFOCUS LIMIT: 3000.
[Enter the upper defocus limit in Angstroems.]
.NUMBER OF SP. FREQ. PTS./DEF. POINTS: 120,300
[Enter the number of spatial frequency grid points and the
number of defocus grid points.]
.MAXIMUM SPATIAL FREQUENCY [A**-1]: 0.5
[Enter the spatial frequency limit in 1./Angstroems.]
.SOURCE SIZE: .005
[Enter the source size in spatial frequency units,
1./Angstroems.]
.DEFOCUS SPREAD [A]: 200.
[Enter the 1/e halfwidth of the defocus distribution in
Angstroems.]
.AMPLITUDE CONTRAST RATIO [0-1], GAUSSIAN ENVELOPE PARAMETER: 0.2,100
[Enter ACR and GEP; see below for definition.]
.(D)IFFRACTOGRAM/(E)NVELOPE/(S)TRAIGHT: D
[Either the transfer function is put into the array directly as
computed (option 'S'), or its square (option 'D') is stored, or
else the envelope function describing the attenuation of the
transfer function due to partial coherence effects (option
'E').]
.FRAME? (Y/N): Y
[The specified function will then be generated, and stored
in TRA001.]
NOTES