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phot.py
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Sun, Jun 2, 19:25

phot.py
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from numpy import *
import ctes
import units
try:
from scipy import optimize
is_scipy = True
except ImportError:
is_scipy = False
####################################################################################################################################
#
# SOME FUNCTIONS RELATED TO PHOTOMETRY / OBSERVATION
#
####################################################################################################################################
def MvtoLv (Mv,Mvsun=4.83,Lvsun=1.0):
'''
Mv : magnitude in V-band
Mvsun : magnitude of the sun in V-band
Lvsun : V-band solar luminosity in solar luminosity unit
Return the corresponding V-band luminosity in solar luminosity unit.
'''
Lv = Lvsun * 10**((Mvsun - Mv)/2.5)
return Lv
def LvtoMv (Lv,Mvsun=4.83,Lvsun=1.0):
'''
Lv : V-band luminosity in solar luminosity unit
Mvsun : magnitude of the sun in V-band
Lvsun : V-band solar luminosity in solar luminosity unit
Return the magnitude in V-band
'''
Mv = Mvsun - 2.5*log10( Lv/Lvsun )
return Mv

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