How to use the extinction.Fitzpatrick99 function in extinction
To help you get started, we’ve selected a few extinction examples, based on popular ways it is used in public projects.
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gbrammer / grizli / grizli / utils.py View on Github 
def __init__(self, a_v, r_v=3.1):
self.a_v = a_v
self.r_v = r_v
self.IS_SPECUTILS = False
self.IS_EXTINCTION = False
try:
from specutils.extinction import ExtinctionF99
self.IS_SPECUTILS = True
self.F99 = ExtinctionF99(self.a_v, r_v=self.r_v)
except(ImportError):
try:
from extinction import Fitzpatrick99
self.IS_EXTINCTION = True
self.F99 = Fitzpatrick99(r_v=self.r_v)
except(ImportError):
print("""
Couldn\'t find extinction modules in
`specutils.extinction` or
`extinction.Fitzpatrick99`.
MW extinction not implemented.
""")
self.status = self.IS_SPECUTILS | self.IS_EXTINCTIONextinction
Fast interstellar dust extinction laws
