Hi everyone:
    when I open  MODIS L1B reflctance data with ENVI. I found that there is 26 bands in the header file. band 1,2,3,4,5,6,7,8,9,10,11,12,13lo,13hi,14lo,14hi,15,16,17,18,19,26. we can see that the band 13 and band14 is seperated to two part 13lo,13hi,14lo,14 hi. Do you know the wavelength of the band 13 lo,13 hi,14lo,14hi?
   expecting your answer!
                                                                                                       lee

Lee,

Band 13 is a 10nm band centered on 667nm
Band 14 is a 10nm band centered on 678nm

Both bands have two 'gain' settings (hi and lo)

Regards,
Sean

thank you very much! sean!
   what is your mean about the two "gain" setting (lo,hi). Does it mean that the  band 13 lo and band 13 hi have the same wavelength (667nm) and the same FWHM (10nm)?
  expect for your return!

Lee,

The wavelength is the same between the hi and lo gain
settings.  The instrument has two electronic gain settings
for these bands, one low gain for higher input signals (e.g. land)
and one high gain for lower input signals (e.g. oceans)

Sean