region in which the SPS contribution equals or exceeds the natural sky background is much easier to increase than decrease. Figure 2 shows the outer contours of the regions in which the SPS contribution equals or exceeds natural dark sky background for increases in either the apparent magnitude of the satellites or the intensity of the wings of their brightness profile by factors of 2 and 5. It is critical to note how important small changes can be in assessing the impact of the SPS on optical astronomy. FIGURE 2. KITT Peak - 0^ Local Time at the Vernal Equinox (The size of the zones in which the SPS-induced background would equal the natural brightness if the satellites were 2 or 5 times brighter than described in the Briefing Document.)
RkJQdWJsaXNoZXIy MTU5NjU0Mg==