Continuum maps of Cep E, HH 1, HH 212, and L1551 obtained from SOFIA/FIFI-LS observations in the two FIFI-LS channels at 63.18 μm and 145.53 μm. Green stars mark the positions of the continuum sources taken from the 2MASS catalogue (Table 1), with the exeption of HH 212. In the case of HH 212, the green stars indicate the position of the centroid of the fitted 2D Gaussian (see discussion in Sect. 4.1).