29 lines
1.1 KiB
Python
29 lines
1.1 KiB
Python
from ..target.ATarget import ATarget
|
|
from ..SpectralQty import SpectralQty
|
|
import astropy.units as u
|
|
from astropy.io import ascii
|
|
import re
|
|
|
|
|
|
class FileTarget(ATarget):
|
|
"""
|
|
A class to create a target from a file containing the spectral flux densities
|
|
"""
|
|
|
|
def __init__(self, file: str):
|
|
"""
|
|
Initialize a new target from a file containing the spectral flux density values
|
|
|
|
Parameters
|
|
----------
|
|
file : str
|
|
The file to read the spectral flux density values from. The file needs to provide two columns: wavelength
|
|
and the corresponding spectral flux density. The format of the file will be guessed by
|
|
`astropy.io.ascii.read(). If the file doesn't provide units via astropy's enhanced CSV format, the units will
|
|
be read from the column headers or otherwise assumed to be *nm* and *W / m^2 / nm*.
|
|
"""
|
|
# Create spectral quantity from file
|
|
sfd = SpectralQty.fromFile(file, u.nm, u.W / (u.m ** 2 * u.nm))
|
|
# Initialize the super class
|
|
super().__init__(sfd)
|