Dust continuum images centered on the phase-centers listed in Table 1. The peak intensities are 93, 83, 44, 33, and 278 mJy beam⁻¹ for TMC1A, L1527, Elias 29, GSS30I1, and GSS30I3, respectively. TMC1A and L1527 are imaged at 203.99 GHz (1.4696 mm) while Elias 29, GSS30I1 and GSS30I3 are observed at 397.25 GHz (754.67 μm). The color scale spans the dust continuum intensities between 1σ to peak intensities with linear spacing. The heavy blue lines indicate the 5, 10, 15, 30 and 60σ contours.