The region around HH 644 and 645 in Hα, [S ii], I and H₂. The bright point source and the curved filaments are actually reflection nebulae, visible at broadband I, and trace probably a cavity drawn by HH 644, which is only seen in [S ii] and Hα. HH 647 is much brighter in the H₂ image, where there is also a nebulosity in the upper left corner of the image, not associated with optical structures. The strong Spitzer sources have their positions marked by a cross in the Hα image.