Channel maps of the ¹²CO J = 1−0 and J = 2−1 line emission toward CRL 2477 at the LSR velocities (units of km s^-1) specified in the top-left corner of each panel. No primary beam attenuation correction is applied. (Top) CO J = 1−0: contours are plotted from 3σ, with a spacing of 4σ, where σ = 7 mJy beam^-1. Equivalent negative contours are plotted in dashed lines. The last panel presents the continuum emission with a first contour and contour spacing of 3σ, with σ = 0.4 mJy beam^-1. The synthesized beam, plotted in the bottom-right corner of last panels, is in size, with PA = 17°. (Bottom) CO J = 2−1: contours are plotted from 3.5σ, with a spacing of 8σ, where σ = 12 mJy beam^-1. Equivalent negative contours are plotted in dashed lines. The last panel presents the continuum emission with a first contour and contour spacing of 2.5σ, where σ = 0.6 mJy beam^-1. The synthesized beam, plotted in the bottom-right corner of last panels, is in size, with PA = 14°. The central coordinates are 19:56:48.429, Dec 30:44:00.34 (J2000).