31 lines
1.3 KiB
Python
31 lines
1.3 KiB
Python
from esbo_etc.classes.optical_component.AOpticalComponent import AOpticalComponent
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from esbo_etc.classes.ITransmissive import ITransmissive
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from esbo_etc.classes.SpectralQty import SpectralQty
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import astropy.units as u
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class StrayLight(AOpticalComponent):
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"""
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A class to model additional stray light sources e.g. zodiacal light
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"""
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def __init__(self, parent: ITransmissive, emission: str = None) -> "Atmosphere":
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"""
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Initialize a new stray light source
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Parameters
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----------
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parent : ITransmissive
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The parent element from which the electromagnetic radiation is received.
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This element is usually of type Target or StrayLight.
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emission : str
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Path to the file containing the spectral radiance of the stray light source.
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The format of the file will be guessed by `astropy.io.ascii.read()`.
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"""
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# Read the emission
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emission_sqty = SpectralQty.fromFile(emission, wl_unit_default=u.nm,
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qty_unit_default=u.W / (u.m**2 * u.nm * u.sr))
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# Create dummy transmittance
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transmittance_sqty = SpectralQty(emission_sqty.wl, [1] * len(emission_sqty.wl) * u.dimensionless_unscaled)
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# Initialize the super class
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super().__init__(parent, transmittance_sqty, emission_sqty)
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