Spectra
Spectrum
Bases: SimpleSpectrum
A simple spectrum class using wavelengths and weights.
UML
Attributes:
Name  Type  Description 

wavelengths 
(Array, metres)

The array of wavelengths at which the spectrum is defined. 
weights 
Array

The relative weights of each wavelength. 
Source code in src/dLux/spectra.py
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__init__(wavelengths, weights=None)
Parameters:
Name  Type  Description  Default 

wavelengths 
(Array, metres)

The array of wavelengths at which the spectrum is defined. 
required 
weights 
Array = None

The relative weights of each wavelength. Input weights are automatically normalised to a sum of 1. 
None

Source code in src/dLux/spectra.py
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normalise()
Returns a normalised spectrum object, where the weights are normalised to a sum of 1.
Returns:
Name  Type  Description 

spectrum 
Spectrum

The spectrum object with the normalised spectrum. 
Source code in src/dLux/spectra.py
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PolySpectrum
Bases: SimpleSpectrum
Implements a generic polynomial spectrum, such as a linear spectrum.
This implements a polynomial as follows: f(x) = c0 + c1x + c2x^2 + ... + cn*x^n
UML
Attributes:
Name  Type  Description 

wavelengths 
(Array, metres)

The array of wavelengths at which the spectrum is defined. 
coefficients 
Array

The array of polynomial coefficient values. 
Source code in src/dLux/spectra.py
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weights: Array
property
Gets the relative spectral weights by evaluating the polynomial function at the internal wavelengths. Output weights are automatically normalised to a sum of 1.
Returns:
Name  Type  Description 

weights 
Array

The normalised relative weights of each wavelength. 
__init__(wavelengths, coefficients)
Parameters:
Name  Type  Description  Default 

wavelengths 
(Array, metres)

The array of wavelengths at which the spectrum is defined. 
required 
coefficients 
Array

The array of polynomial coefficient values. 
required 
Source code in src/dLux/spectra.py
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normalise()
Calculated weights are automatically normalised, so this method simply returns an unmodified object.
Returns:
Name  Type  Description 

spectrum 
Spectrum

The unmodified spectrum object 
Source code in src/dLux/spectra.py
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