from esbo_etc.classes.optical_component.AOpticalComponent import AOpticalComponent from esbo_etc.classes.ITransmissive import ITransmissive from esbo_etc.classes.SpectralQty import SpectralQty import astropy.units as u class Atmosphere(AOpticalComponent): """ A class to model the atmosphere including the atmosphere's spectral transmittance and emission. """ def __init__(self, parent: ITransmissive, transmittance: str, emission: str = None) -> "Atmosphere": """ Initialize a new atmosphere model Parameters ---------- parent : ITransmissive The parent element of the atmosphere from which the electromagnetic radiation is received. This element is usually of type Target or StrayLight. transmittance : str Path to the file containing the spectral transmittance-coefficients of the atmosphere. The format of the file will be guessed by `astropy.io.ascii.read()`. emission : str Path to the file containing the spectral radiance of the atmosphere. The format of the file will be guessed by `astropy.io.ascii.read()`. """ # Read the transmittance transmittance_sqty = SpectralQty.fromFile(transmittance, wl_unit_default=u.nm, qty_unit_default=u.dimensionless_unscaled) if emission is None: # No emission is given, initialize the super class super().__init__(parent, transmittance_sqty) else: # Read the emission emission_sqty = SpectralQty.fromFile(emission, wl_unit_default=u.nm, qty_unit_default=u.W / (u.m**2 * u.nm * u.sr)) # Initialize the super class super().__init__(parent, transmittance_sqty, emission_sqty)