Map of Lyα brightness in R. The map shows some variability in brightness ranging from 110 to 160 R. The more uniform swaths at the top and right are regions observed by the Alice box, which average over a much larger region with each step of the instrument than the higher resolution region produced by the narrow 0﹩\mathop{.}\limits^{\unicode{x000b0}}﹩1 slot. The orange circles represent locations of UV-bright stars listed in the CUBS catalog (M. A. Velez et al. 2024). The overlapping white and yellow boxes near 305° longitude are the outlines of Row 9 over one integration period during each of the two scans. The overlapping region provides an indication of the effective spatial resolution of our map.