TMC-1 as seen by SCUBA at 850   μm (convolved to 30″ in a) and 228″ in b)). The map is reproduced from Nutter et al. (2008), who calls the filament “the Bull’s Tail”. The red diamonds represent the locations of our CH spectral observations (separated by 2′), and the black triangles mark the locations of the cyanopolyyne and ammonia maxima. The letters A–E and X mark the regions of the six dense cores as per Hirahara et al. (1992), with the asterisks marking the locations of the CCS maxima corresponding to the six cores. The two contour line levels correspond to intensities of 0.19 and 0.32 Jy/beam on the 30″ resolution map and 3.5 and 9.6 Jy/beam on the 228″ map. The filled red diamond on the image is located at , δ_J2000 = 25°50′04″, marking the origin of the CH observations performed by us.