Monochromator Bandpass Calculator

Calculate spectral bandpass, dispersion, grating angles, and detector-limited resolution.

Instrument Parameters
Grating Geometry
Grating angle (θ)
17.861°
Incidence angle (α)
29.861°
Diffraction angle (β)
5.861°
Dispersion
Reciprocal linear dispersion (P)
3.316nm/mm
Theoretical resolving power (R)
75000.0
Bandpass
Spectral bandpass (BP)
0.3316nm
Slit-limited resolving power
1507.9
Abridged Optics — Monochromator Bandpass Calculator v1.0Uses the scanning equation: mλ = 2d cos(DV/2) sin θ. Assumes symmetric CT geometry.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.