# Units:
#  "lambda" is in Angstroms
#  "pass" is the contribution to the detector signal per photon
#         entering the atmosphere of Earth (for airmass 1.3)
#  "pass_1_[069]" are the contribution to the signal for airmasses
#         1.0, 1.6, and 1.9 respectively
#
# Bandpass Name(s): i
#
# Instrument: SDSS telescope at APO Average over columns 1-6
# 
# Determined by: Jim Gunn, Mamoru Doi, Daniel Eisenstein
#
# Date of determination: 2001-12-18
#
# Meaning of/Reason for default column: 1.3 airmass; SDSS magnitudes are
#   calibrated to this airmass
#
# Notes:
#
#  Keep in mind that SDSS pipelines are output in the MAYBE magnitude 
#  system, which is currently (2002-08-19) thought to be related to
#  the AB magnitude system by the offsets:
#
#    u(AB,2.5m) = u(MAYBE,2.5m) - 0.042
#    g(AB,2.5m) = g(MAYBE,2.5m) + 0.036
#    r(AB,2.5m) = r(MAYBE,2.5m) + 0.015
#    i(AB,2.5m) = i(MAYBE,2.5m) + 0.013
#    z(AB,2.5m) = z(MAYBE,2.5m) - 0.002
#
#  See sdss-general/2486 or contact David W. Hogg for details.
#
#  The following notes come from Jim Gunn:
# 
#    These files are the response functions as measured by Mamoru Jan 2001,
#    interpolated to fill in the sharp corner near the red cutoff using model
#    filters and then splined to a standard wavelengh set, shared by all of
#    the files in this set of response functions for all the telescopes.
#  
#    The files indexed 0 are the response functions averaged over the six
#    columns of the camera.
#    
#    The file sdssav.lis is a list of magnitudes (V=0) and colors for these
#    (average) response functions at 1.3 airmasses run against the
#    Gunn-Stryker spectrophotometric atlas stars and the AB95 standards. 
#    These are AB magnitudes, note, not whatever system we will come up with. 
#    To transform from USNO magnitudes to a natural SDSS AB system, the
#    best-guess transformations as of this writing are
#  
#    u_AB = u' - 0.04 - 0.003*(u'-g')
#    
#    g_AB = g'        + 0.069*(g'-r') 
#    
#    r_AB = r'        + 0.038*(r'-i') 
#    
#    i_AB = i'        + 0.049*(r'-i')
#    
#    z_AB = z' - 0.01 + 0.011*(i'-z')
#    
#    but these are based ENTIRELY on calculations, and should be much better
#    determined by observations shortly.
#    
#    jeg011218
#
  6430   0.0000   0.0000   0.0000   0.0000   0.0000
  6480   0.0004   0.0003   0.0003   0.0003   0.0003
  6530   0.0006   0.0004   0.0004   0.0004   0.0004
  6580   0.0004   0.0003   0.0003   0.0003   0.0003
  6630   0.0013   0.0009   0.0009   0.0009   0.0009
  6680   0.0047   0.0034   0.0033   0.0032   0.0032
  6730   0.0145   0.0103   0.0101   0.0099   0.0097
  6780   0.0479   0.0343   0.0337   0.0332   0.0327
  6830   0.1196   0.0839   0.0822   0.0805   0.0788
  6880   0.2333   0.1552   0.1497   0.1443   0.1392
  6930   0.3569   0.2428   0.2359   0.2291   0.2226
  6980   0.4559   0.3221   0.3166   0.3113   0.3060
  7030   0.5232   0.3733   0.3683   0.3633   0.3584
  7080   0.5603   0.4098   0.4075   0.4053   0.4031
  7130   0.5769   0.4125   0.4078   0.4031   0.3985
  7180   0.5827   0.3823   0.3686   0.3553   0.3426
  7230   0.5803   0.3938   0.3838   0.3740   0.3645
  7280   0.5709   0.3852   0.3751   0.3653   0.3557
  7330   0.5585   0.3873   0.3806   0.3740   0.3676
  7380   0.5469   0.3805   0.3747   0.3690   0.3633
  7430   0.5375   0.3739   0.3686   0.3634   0.3582
  7480   0.5302   0.3664   0.3610   0.3556   0.3503
  7530   0.5223   0.3557   0.3494   0.3431   0.3370
  7580   0.5112   0.3470   0.3409   0.3350   0.3292
  7630   0.4976   0.2334   0.2055   0.1810   0.1594
  7680   0.4833   0.3282   0.3235   0.3189   0.3143
  7730   0.4697   0.3188   0.3147   0.3106   0.3066
  7780   0.4581   0.3092   0.3051   0.3011   0.2971
  7830   0.4479   0.2998   0.2955   0.2913   0.2872
  7880   0.4385   0.2924   0.2882   0.2842   0.2801
  7930   0.4312   0.2893   0.2861   0.2828   0.2796
  7980   0.4260   0.2893   0.2873   0.2854   0.2834
  8030   0.4184   0.2856   0.2842   0.2829   0.2815
  8080   0.4058   0.2729   0.2705   0.2681   0.2657
  8130   0.3783   0.2433   0.2379   0.2327   0.2276
  8180   0.2767   0.1713   0.1655   0.1600   0.1547
  8230   0.1494   0.0917   0.0883   0.0851   0.0821
  8280   0.0608   0.0382   0.0370   0.0359   0.0348
  8330   0.0176   0.0117   0.0115   0.0113   0.0111
  8380   0.0071   0.0048   0.0047   0.0047   0.0046
  8430   0.0029   0.0020   0.0020   0.0019   0.0019
  8480   0.0014   0.0010   0.0010   0.0010   0.0009
  8530   0.0013   0.0009   0.0009   0.0009   0.0009
  8580   0.0007   0.0005   0.0005   0.0005   0.0005
  8630   0.0000   0.0000   0.0000   0.0000   0.0000
