Projected maps showing the coverage of the data used in the work at a healpix resolution of nside = 64 plotted as a function of Galactic longitude ℓ and latitude b, centered on (ℓ, b) = (0°, 0°). The top left panel shows the mean number of bands from all surveys combined, while the bottom left panel shows the overall (log-)number of stars in each pixel. The mean number of bands from the individual surveys are shown in the remaining panels, with Pan-STARRS (Section 2.1) in the top middle panel, 2MASS (Section 2.2) in the top right panel, UKIDSS (Section 2.3) in the bottom middle panel, and unWISE (Section 2.4) in the bottom right panel. While toward the Galactic center we lose a substantial amount of coverage (transition from orange/yellow to purple in the upper left panel) due to crowding and dust extinction (transition from blue to yellow in the lower left panel), at high Galactic latitudes and in the Galactic outskirts we have 8–10 bands of optical to near-infrared (NIR) coverage. The uniform coverage of the Pan-STARRS data is due to the sample selection, which requires ≥4 bands of Pan-STARRS photometry. Due to the depth of the UKIDSS Large Area Survey (LAS) data, in regions that overlap with the survey area we have almost 10 bands of wavelength coverage from the optical through the IR. An interactive version of this figure is available in the article and also at https://faun.rc.fas.harvard.edu/czucker/Paper_Figures/brutus_sky_coverage.html. An interactive version of Figures 2 and 3 is available. In this interactive version, the projected sky coverage maps are shown at the top while histograms highlighting the wavelength coverage are shown at the bottom. Buttons at the top middle allow the user the ability to see how the coverage changes when including/excluding data from Pan-STARRS1, 2MASS, UKIDSS, and unWISE. Buttons at the top right provide pan, zoom, save, and reset functionality; hover the mouse over each button to see what it does. An interactive version of this figure is available.

An interactive version of this figure is available in the online journal.