CTF calculator

CTF calculator

This interactive page allows you to calculate the contrast transfer function. The CTF model is compatible with that of RELION.

Box size (in pix):
Pixel size (in Å / pix):
Defocus ((U+V)/2 in Å):
Astigmatism ((U-V)/2 in Å):
Astigmatism angle (in deg):
Cs (in mm):
Energy (in kV):
Amplitude contrast:
Phase shift (in deg):
Draw ring at (in Å):

This page is written by Takanori Nakane at MRC-LMB. This page uses Javascript for calculation.