Source code for barak.phot
""" Photometry-based tools.
"""
[docs]def UBVRI_to_ugriz(U, BmV, UmB, RmI):
""" Conversion from Fukugita et al. 1996."""
g = V + 0.56 * BmV - 0.12
r = V - 0.49 * BmV + 0.11
umg = 1.38*UmB + 1.14
u = umg + g
#gmr = 1.05*(B-V) - 0.23
if R - I < 1.15:
rmi = 0.98* RmI - 0.23
else:
rmi = 1.40* RmI - 0.72
i = r - rmi
if R - I < 1.65:
rmz = 1.59* RmI - 0.40
else:
rmz = 2.64* RmI - 2.16
z = r - rmz
return u,g,r,i,z