CtfExplorer allows to calculate the Phase Contrast Transfer Function
(CTF): a useful characteristics in Electron Microscopy
Calculates 1-Dimensional CTF
Calculates 2-Dimensional CTF
Calculates Defocus Map
Shows the effects of 2-Fold and 3-Fold astigmatism
Allows to change Defocus, 2-Fold and 3-Fold astigmatism in real time
Shows what happens to 1D CTF in different directions when there's
Displays the damping envelopes
Allows to select a microscope from a list of microscopes
Allows to create a custom microscope
Allows to change HT, Cs, Cc, Energy Spread, Convergence for any microscope
2 modes of operation: CTF Explorer (to see everything) and CTF Plotter
Compares 2 microscopes or 2 settings for 1 microscope
Saves 1D CTF, 2D CTF and "Defocus Map" as bitmaps or metafiles
Added in 0.99b4 (30 November 2000)
"Magnification" slider control. This is to show why it is
not a good idea to do HRTEM at x1,000,000 magnification and why
sometimes pictures taken at x200,000 look better than those taken at
Export of ctfExplorer 1-D plots to tab-delimited text format
"Lichte defocus" is included to the list of the most
0.99b5 (18 August 2001)
User interface improvements and other fixes
Extended list of microscopes
Added in 0.99b6 (5 December 2001)
Euro-bug removed. When installed on a computer with a Windows locale which uses a comma instead of a point as a decimal separator, ctfExplorer would rise an
exception when one selects a microscope from the list.
Now it's fixed but one must use a point '.' as the
decimal separator e.g. when editing a microscope. I.e. always write 1.3 instead of 1,3 etc.
Added in 0.999a (10 February 2002)
an error in the formula used for Focal Spread calculation which caused
too strong damping by temporal envelopeat
Michael O'Keefe, Peter Tiemeijer and Uwe Lucken for
Added a posibility to change number for High Tension and Objective
Lens current instabilities (along with chromatic aberration and energy
spread they affect the value of focal spread).
Added a possibility of editing/saving/restoring of the microscope
That's it. A shortcut to ctfExplorer is placed to the top part of
Windows Start menu.
If you ever want to uninstall: Windows Control Panel | Add/Remove | ctfExplorer.
If you have problems accessing the help system then see below.
Note: ctfExplorer help system is designed in MS
HTML Help format which relies on Internet Explorer's layout engine for its
functionality. A full version of the browser should be installed on the end user's system.
Version 4.x (or higher) is recommended for full HTML Help functionality.
ctfExplorer will not function properly
(crashes on exit) without MS
HTML Help system installed.
If you have Internet Explorer 4.x (or higher) on your system but the ctfExplorer help still doesn't work (it should work fine under
Windows 98-2000) then try to: