This program will attempt to determine the CTF parameters of a a set of particles. It will write the result into a .tnf file, which can then be read into ctfit. The results of this program should always be manually verified in ctfit. This program is just designed to save the user a little manual effort.

If you have a fairly small model (size in pixels < 128) or are very far from focus, you might consider using the oversampling option with a value of 2 or 3.

Please note that this program uses an exceptionally inefficient algorithm. However, there is a lot of embedded 'magic' in this routine. It is designed to be functional, not fast.

EMAN Manual page, generated Mon Jan 8 17:35:59 2007

EMAN1/Programs/FitCtf (last edited 2008-11-26 04:42:29 by localhost)