New Horizons instrument fields of view (FOVs) New Horizons instrument fields of view (FOVs) The fields of view (FOVs) of the Ralph MVIC (blue and yellow), Ralph LEISA (red), Alice airglow (green), and LORRI (purple) instruments are projected onto the sky plane; the listed boresights are measured in-flight values. The angular extent of each instrument’s FOV is also listed. The spacecraft +X direction is out of the page, the +Y direction is up, and the +Z direction is to the left. The LORRI field FOV overlaps the narrow portion of the Alice airglow channel, and the MVIC FOV overlaps the wide portion. The LEISA FOV overlaps the MVIC FOV. Figure 3 from Weaver et al. 2008, "Overview of the New Horizons Science Payload"