Aberrations
C10:
C1:
nm
Defocus, C1
C12:
A1:
nm
Φ12:
ΦA1:
°
2-fold Astigmatism, A1
C21:
B2:
nm
Φ21:
ΦB2:
°
Axial Coma, B2
C23:
A2:
nm
Φ23:
ΦA2:
°
3-fold Astigmatism, A2
C30:
C3:
nm
3rd Order Spherical, C3
C32:
S3:
nm
Φ32:
ΦS3:
°
3rd Order Axial Star, S3
C34:
A3:
nm
Φ34:
ΦA3:
°
4-fold Astigmatism, A3
C41:
B4:
μm
Φ41:
ΦB4:
°
4th Order Axial Coma, B4
C43:
D4:
μm
Φ43:
ΦD4:
°
3-Lobe Aberration, D4
C45:
A4:
μm
Φ45:
ΦA4:
°
5-fold Astigmatism, A4
C50:
C5:
mm
5th Order Spherical, C5
C52:
S5:
mm
Φ52:
ΦS5:
°
5th Order Axial Star, S5
C54:
R5:
mm
Φ54:
ΦR5:
°
5th Order Rossette, R5
C56:
A5:
mm
Φ56:
ΦA5:
°
6-fold Astigmatism, A5
Step Size: 1
Ronchigram
π/4 Phase Limit
Electron Probe
χ(α,Φ) = Σn,m[ Cn,m α
n+1cos(m(Φ-Φn,m))/(n+1) ]
○ Objective Aperture Semiangle = mrad ○ π/4 Aperture Semiangle = mrad
Diffraction Limited Resolution = pm
Strehl Ratio for π/4 Semiangle =
○ Aperture Semiangle For Strehl Ratio = mrad
Settings
Show image overlays | Random Uses Real-Life Values | Correction training terms:
Notation: | Calculate Strehl Aperture Semi-Angle (slow)