Integrated ¹²CO map of CTB 102. Integration was between V_LSR = −71 km s⁻¹ and −53 km s⁻¹. White ellipses denote the four main subdivisions of the molecular cloud (1, 2a, 2b, and 2c) along with the smaller 1a region that has a high concentration of YSOs. Cyan contours show the integrated ¹³CO emission. Five contour levels were generated starting 3σ above the median background. The morphology of the molecular cloud is very similar in both the ¹²CO and ¹³CO maps.