TF RCTF - Transfer Function - Rotational average?

(4/4/03)

PURPOSE

Unknown, see the source code. Creates a document file.

USAGE

.OPERATION: TF RCTF

.INPUT IMAGE: IMG000
[Enter the name of the input image.]

.PIXEL SIZE [A], SPHERICAL ABBERATION CS [MM]: 2.8, 2.0
[Enter the pixel size and spherical aberration constant.]

.LAMBDA [A]: 0.037
[Enter the wavelength of the electrons. The value used in this example corresponds to 100kV. A table of values is listed in the glossary under lambda.]

.AMPLITUDE CONTRAST RATIO [0-1]: 0.2

.DEFOCUS [A]: 2600

.ASTIGMATISM AMPLITUDE[A], ASTIGMATISM ORIENTATION [DEG]: 400, 30
[Enter the defocus range due to axial astigmatism. The value given indicates a defocus range of +/- 400A around the nominal value as the azimuth is varied. Then, enter the angle, in degrees, that characterizes the direction of astigmatism. The angle defines the origin direction where the astigmatism has no effect.]

.OUTPUT DOCUMENT: DOC000
[Output document file name.]

NOTES

  1. Theory and all definitions of electron optical parameters are as in: J. Frank (1973) Optik 38:519, and R. Wade & J. Frank (1974) Optik 49:81. Internally, the program uses the generalized coordinates defined in these papers.

  2. Undocumented operation, uncertain what it does (Value in document file has variable name: rotav)!

SUBROUTINES

RCTF

CALLER

UTIL1

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