Millimeter continuum map obtained with the CARMA, PdBI, and SMA overlaid with UKIRT K-band (2.2 μm, left) and Spitzer/IRAC 3.6 μm (right) images. Contour levels start at 3σ in steps of 2σ in all panels. The stars in the top panels mark the UCHii region VLA1. The UKIRT K-band image is from Kumar et al. (2003). The Spitzer/IRAC post-bcd data processed with pipeline version S18.25.0 have been downloaded from the Spitzer archive to create these images.