Methyl formate 8.7 km s^-1 channel map contours overlaid over Lacombe et al. (2004) 2.12 μm excited H₂ emission showing a good correlation of both tracers toward MF1 (white cross) and around (northwest (NW), south-southwest (SSW) and south-southeast (SSE)). The northeast (NE) region analysis is hampered by the subtraction of strong 2 μm continuum from IRc4 (see Fig. 17) – which results in an artefact (the zone in black). The red circled cross marks the proper motion center where the sources n, I, and BN were located 500 years ago (Gómez et al. 2005, 2008; Rodríguez et al. 2005).