### 2005/03/26 - Michael Wood-Vasey
###
### These filter functions were obtained by me from Jose Luis Prieto
### in an email on March 22, 2005:
###
###-------------------------------------------------
### 	From: 	  prieto@astronomy.ohio-state.edu
### 	Subject: 	Re: cfa at 2:30
### 	Date: 	March 22, 2005 13:06:56 EST
### 	To: 	  gm@u.washington.edu
### 	Cc: 	  wmwood-vasey@cfa.harvard.edu
###
###
### Hey,
###
### I send you the 4m filter functions. I convolved the sensitivity functions with QE, extinction, etc, so that different files include different effects:
###
### i4m_1.dat, r4m_1.dat: sensitivity alone, measured with the filters in CTIO.
###
### i4m_2.dat, r4m_2.dat: sens. + quantum efficiency of CCDs
###
### i4m_3.dat, r4m_3.dat: sens. + QE + aluminun reflectivity
###
### i4m_4.dat, r4m_4.dat: sens. + QE + aluminun reflectivity + sky lines
###
### i4m_5.dat, r4m_5.dat: sens. + QE + aluminun reflectivity + sky lines + extinction. This is the final throughput, the same files I sent to Brian Barris for BATM.
###
### I'll fit all the light curves again using different filters to see the differences in distance modulus. Sounds good?
###
### Jose
###
### <attached>4mfilt.tar</attached>
###-------------------------------------------------
###
### I have included here what Jose sent as the 'i4m_5.dat' and
### 'r4m_5.dat' files.  
###
###  [START]
###
### I have renamed them here to 'R4m_throughput.dat' and 'I4m_throughput.dat'
###  and removed the silly factor lambda from the 'System Throughput'.
###
### 'R4m_throughput_w_lambda.dat' and 'I4m_throughput_w_lambda.dat'
###  are the versions with the silly factor of lambda in the 'System Throughput'.
###  [END]
###
###    The statements between [START] and [END] appear not to be true, both
###    files look the same and appear to be with the lambda factor --sj
###
###
