FIS Relative Spectral Responsivity Function (RSRF)
[Last update: 23 Feb 2007]The following tables show the relative spectral response (RSR) curves of the FIS photometric bands. Filter transmittance and detector spectral responsivity are taken into account.
These response data are for the energy dimension, i.e., λ × F_λ or ν × F_ν. They are normalized at the central wavelength.
The data shown here are 'typical' ones for every bands. Each pixel of the FIS detectors has slightly different characteristic, which we are trying to determine. Especially the long-wavelength cut-off of the LW channel varies in wide range of approx. 160--185 micron. More detailed information useful for data analysis will be provided later.
Data
FIS_RSRF_070122 (Tab-Separated Values)Band Width
| Band name | Δν_const (THz) | Δν_flat (THz) | K_const (THz) |
|---|---|---|---|
| N60 | 1.413445 | 1.412121 | 1.000938 |
| WIDE-S | 1.649219 | 1.533161 | 1.075699 |
| WIDE-L | 0.765276 | 0.794052 | 0.963761 |
| N160 | 0.395856 | 0.398929 | 0.992297 |
- Δν_const = ∫ {R(ν)} dν
- Δν_flat = ∫ {F(ν) R(ν)} dν for νF(ν) = const.
- K_const = Δν_const / Δν_flat