This Hα velocity scan image from the Goddard Fabry–Pérot instrument on the ARC 3.5 m at Apache Point Observatory illustrates the radial velocity of the bipolar jets of the PDS 144 stars, and HH 689d and 689e. The three-color image is composed of blue: Hα − 114 ± 60 km s ⁻¹, green: Hα ± 60 km s ⁻¹, and red: Hα + 114 ± 60 km s ⁻¹. HH 689e lacks any blue component and is therefore pointed away from us while HH 689d lacks any red component and is therefore pointed toward us. This image covers approximately the FOV of the center inset in Figure  1. The full FOV of the GFP is 3 7, but only the central region seen here contained radial velocity data on the jets and HH knots associated with PDS 144 N & S.