Full sky map showing an example of the SWA-EAS BM capture scheme. The B-field direction is chosen here to be at [32°, 15°] (red diamond) so the anti-field direction is at [−148°, −15°] (red triangle). The blue grid shows the projection of the EAS1 angle-angle bins onto the plane of the sky, while the red contours show lines of constant pitch angle for this B-field direction, for pitch angles of 30°, 60°, 90°, 120°, and 150°. The two selected elevation bands are shown shaded in orange. Combined these cross the full range of pitch angle space.