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
Easy training 

Hard training 

Controls
Arrow keys: ↑ ↓ Defocus
← → Step size
WASD: Shift aberration
Q,E: Switch selection

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)