a) The C¹⁸O column density image of the OMC-1 core overlaid with black contours of the JCMT 850 μm dust continuum image. The 850 μm image is taken from the JCMT data archive. The contours represent 0.2%, 0.5%, 1%, 2%, 4%, 7%, 20%, 40%, 60%, and 80% of the peak intensity (87 Jy beam^-1). b) The excitation temperature image for ¹²CO and C¹⁸O overlaid with the 35 mm VLA-GBT continuum emission (Dicker et al. 2009) in black contours running from 15% to 95% in steps of 8% of the peak intensity (0.94 Jy beam^-1). The stars mark the positions of the five Trapezium stars, and black triangles represent the position of the Orion Hot Core.