pybsm.radiance.functional.cold_shield_self_emission
- pybsm.radiance.functional.cold_shield_self_emission(*, wavelengths: ndarray, cold_shield_temperature: float, D: float, f: float) ndarray
Represents spectral irradiance on the FPA due to emissions from the walls of the dewar itself.
For infrared systems, this term represents spectral irradiance on the FPA due to emissions from the walls of the dewar itself.
- Parameters:
wavelengths – wavelength array (m)
cold_shield_temperature – temperature of the cold shield (K); it is a common approximation to assume that the coldshield is at the same temperature as the detector array
D – effective aperture diameter (m)
f – focal length (m)
- Returns:
- cold_shield_E:
cold shield spectral irradiance at the FPA (W / m^2 m)
- Raises:
- ZeroDivisionError:
if D is 0