Observed [O III] line intensities in Sgr B1. All but the darkest blue pixels have S/N > 3. The black contours are the 8.4 GHz Very Large Array (VLA) intensities from M92 and the cyan contours are the 70 μm Herschel Hi-GAL intensities (Molinari et al. 2011, 2016). (a) The [O III] 52 μm line (maximum intensity = 1.92 × 10⁻¹⁶ W m⁻² arcsec⁻²). (b) The [O III] 88 μm line (maximum intensity = 1.57 × 10⁻¹⁶ W m⁻² arcsec⁻²).