Table 1: ISOCAM filters used for ISOGAL: reference wavelengths and bandwidths, zero point magnitudes and flux densities, and total observed area.
Filter $\lambda_{\rm ref}$ $\Delta\lambda$ ZPa Fmag=0 Area
  [ $\mu \rm m$] [$\mu \rm m$] [mag] [Jy] [deg2]
LW2 6.7 3.5 12.39 90.36 9.17
LW5 6.8 0.5 12.28 81.66 0.64
LW6 7.7 1.5 12.02 64.27 2.97
LW3 14.3 6.0 10.74 19.77 9.92
LW9 14.9 2.0 10.62 17.70 3.53

a The magnitude of a source with a flux density $F_{\nu}$ expressed in mJy is given by $mag=ZP-2.5 \times \log (F_{\nu}$).

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