Table 4: Format of ISOGAL "Fields'' Table (version 1) - 263 entries (see example in Table 5).
Col. Name Format Units [range] Description
1 Name a14   ISOGAL field identifier
2 ION7 a8   ION for 7 $\mu $m data (see Table 2)
3 ION15 a8   ION for 15 $\mu $m data
4 filt7 i1 [2,5,6] 7 $\mu $m filter
5 filt15 i1 [3,9] 15 $\mu $m filter
6 pfov i1 arcsec [3,6] pixel field of view
7 G_lon f8.4 deg [-180-+180] Galactic longitude of field centre
8 G_lat f8.4 deg [-90-+90] Galactic latitude of field centre
9 dl f6.4 deg half width of field in longitudea
10 db f6.4 deg half width of field in latitudea
11 area f6.4 deg2 area of field
12 dens7 i5 deg-2 density of 7 $\mu $m sources
13 dens15 i5 deg-2 density of 15 $\mu $m sources
14 RMS_II f4.2 arcsec RMS separation of 7-15 $\mu $m associated sources
15 RMS_ID f4.2 arcsec RMS separation of ISO-DENIS associated sources
16 K_max1 f4.1  mag DENIS $K_{\rm s}$ magnitude cutoff 1b
17 K_max2 f4.1  mag DENIS $K_{\rm s}$ magnitude cutoff 2c
18 dens_K2 i5 deg-2 density of DENIS $K_{\rm s}$ sources usedd
a dl and db apply to the limits inside the edges of the images within which sources are accepted.
b maximum DENIS $K_{\rm s}$ magnitude limiting the density of $K_{\rm s}$ DENIS sources to $\sim$18 000 sources per square degree if the ISO images have 6 $^{\prime \prime }$ pixels (or to $\sim$72 000 sources per square degree for the 3 $^{\prime \prime }$ ISO observations). K_max1 is used to discuss the quality of ISOGAL-DENIS associations (see Sect. 4.3.4).
c maximum DENIS $K_{\rm s}$ magnitude accepted in order to avoid spurious cross-identifications. The density of $K_{\rm s}$ DENIS sources is limited to $\sim$36 000 sources per square degree for 6 $^{\prime \prime }$ ISO observations (and again to $\sim$72 000 sources per square degree for 3 $^{\prime \prime }$ ISO observations).
d density of DENIS $K_{\rm s}$-band sources brighter than the cutoff magnitude K_max2.

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