At 1.2 kpc: MIDI spectrum (blue) compared with the ISO spectrum (black – solid: 14″ × 20″ aperture, dashes: 14″ × 27″ aperture), ISOCAM data (green crosses), AKARI data (open circles), the TIMMI2 photometric measurements of Smith & Gehrz (2005) with an aperture of 4″(cyan triangles), IRAS measurements (circles) and Cohen & Barlow (1974) photometry (purple stars, 11″ beam). The NACO L′ and M′ band are also included (magenta stars, aperture 0.4″). The red line is the best model with the full aperture (~1″). All spectra have been dereddened using the Savage & Mathis (1979) law.