Table 3: N88A and a few neighbouring stars: values of the magnitudes U, B, V, I, J, K, y (Strömgren $\lambda $5475 Å) found in the literature and values of the cont5300 and K magnitudes from the present work. Identification corresponds to the numbering in Fig. 1a.

Id		 $\alpha$ (2000) $\delta$ $V^{\rm M}$ B-V U-B $I^{\rm D}$ J K $J^{\rm 2M}$ H K $V^{\rm W}$ $y^{\rm H}$ $\lambda $5300$^{\rm p}$ K V-K Type
23 1 24 10.88-73 09 20.6 14.80 -0.20 -0.96 15.41 15.07         15.65 (BOIII) 15.94 14.84 15.54 -0.76  
24 1 24 13.94-73 09 19.5                   14.91 (O9.5III) 15.28   15.31    
25 1 24 12.68-73 09 16.3                   15.97 (BO) 16.46   16.20    
27 1 24 04.89-73 09 15.0 14.70 -0.12 -1.04 15.36 15.67   15.63 15.61 15.61 16.88 (BOIII) 15.68 14.70 15.73 -1.03  
28 1 24 07.18-73 09 15.6 14.61 0.27 -0.97 15.76 15.09   16.39 15.19 15.13   16.41 15.52 16.44 -1.02  
30 1 24 04.79-73 09 07.3 14.67 -0.18 -0.93 15.60 15.76   16.10 15.94 15.57 16.01 (BOV)   15.16 16.26 -1.10  
31 B 1 24 08.95-73 09 06.3             15.12 13.49 12.84     15.66 15.37 0.29 O9.5 V
32 A 1 24 07.88-73 09 04.5 12.18 1.07 -0.73 13.30 12.01 10.97 12.32 12.01 11.19 (O6) 17.49 13.62 11.07 2.55 O6-O8V
33 1 24 08.87-73 08 56.1                     18.02 16.92 14.54 2.31 G9-K1II
34 1 24 09.88-73 08 53.7                   16.54 (O9.5I) 17.00 15.74 16.24 -0.50  
$^{\rm M}$, $^{\rm D}$ and $^{\rm 2M}$ correspond to Massey (2002), DENIS and 2MASS catalogues respectively.
$^{\rm W}$ V magnitudes and spectral types from Wilcots (1994b).
$^{\rm H}$, Strömgren y (F547) magnitudes from HM99. For the stars 27, 28 and 32, spatially resolved into double or triple stars by the HST, the given magnitudes
correspond to the sum of their components and are not affected by the brightness excess due to dust scattering.
$^{\rm p}$ Present work.

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