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esbo_etc/classes/optical_component/Atmosphere.py
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esbo_etc/classes/optical_component/Atmosphere.py
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from esbo_etc.classes import AOpticalComponent, ITransmissive, SpectralQty
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import astropy.units as u
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class Atmosphere(AOpticalComponent):
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"""
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A class to model the atmosphere including the atmosphere's spectral transmittance and emission.
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"""
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def __init__(self, parent: ITransmissive, transmittance: str, emission: str = None) -> "Atmosphere":
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"""
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Initialize a new atmosphere model
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Parameters
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----------
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parent : ITransmissive
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The parent element of the atmosphere from which the electromagnetic radiation is received.
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This element is usually of type Target or StrayLight.
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transmittance : str
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Path to the file containing the spectral transmittance-coefficients of the atmosphere.
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The format of the file will be guessed by `astropy.io.ascii.read()`.
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emission : str
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Path to the file containing the spectral radiance of the atmosphere.
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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 transmittance
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transmittance_sqty = SpectralQty.fromFile(transmittance, wl_unit_default=u.nm,
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qty_unit_default=u.dimensionless_unscaled)
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if emission is None:
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# No emission is given, initialize the super class
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super().__init__(parent, transmittance_sqty)
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else:
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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.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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