LIRIS K_S image of Masgomas-1; the stars observed spectroscopically with the multi-object masks are shown with red squares (early-type stars), and green diamonds (A- and late-type disc stars). Bright stars observed with long-slit spectroscopy are marked with red circles. The position of star s02, observed with long-slit, is not shown in the figure because it lies 30 arcsec to the right of the field. Blue ellipses correspond to the 1σ positional uncertainties for the IRAS 18476+0017 (central) and IRAS 18476+0019 (lower) sources. The (blue) cross shows the position of the radio source GPSR 033.086+0.434.