Solar Spectrum#

class SolarSpectrum(spectrum_name: str = 'sao2010', fwhm=None)[source]#

A class used to load solar irradiance spectrum. The class currently supports the following spectra:

SAO2010
Fontela UVIS to 3 microns
Fontela UVIS to 100 micron,

The choice of solar spectrum is specified in the constructor, the default is sao2010. The other values are ‘fontela_uvis3micron` and `fontela_uvis100micron’.

The solar data are implemented as python data arrays stored in the source code and can a second or two to load. But we have written the code so the solar data are only imported in for the model you request and only when you request it.

Attributes:

max_valid_wavelength: The maximum wavelength in nanometers in the curreent table
min_valid_wavelength: The minimum wavelength in nanometers in the current table.
resolution_fwhm: The FWHM in nanometers of the instrument resolution used to measure the current solar spectrum.
sample_spacing: The spacing in nanometers between spectral samples in the table.

Methods

`irradiance`(nm)	Returns the solar irradiance at 1 A.U.
`set_solar_distance_au`(au)	Sets the distance of the sun in astronomical units (AU).

irradiance(nm: ndarray)[source]#

Returns the solar irradiance at 1 A.U. at the requested wavelengths.

Parameters:

nmnp.ndarray: An array of wavelengths in nanometers. The current solar irradiance table is linearly interpolated to the desired wavelengths. The irradiance signal is set to 0.0 for all wavelengths outside of the current solar table wavelength bounds.

Returns:

np.ndarray: The solar irradiance for each of the requested wavelengtths

property max_valid_wavelength#: The maximum wavelength in nanometers in the curreent table

property min_valid_wavelength#: The minimum wavelength in nanometers in the current table.

property resolution_fwhm: float#: The FWHM in nanometers of the instrument resolution used to measure the current solar spectrum.

property sample_spacing: float#: The spacing in nanometers between spectral samples in the table.

set_solar_distance_au(au: float)[source]#

Sets the distance of the sun in astronomical units (AU).

Parameters:

au: float: The distance of the Sun in astronomical units. The default upon initialization is 1.0