Image Details
Caption: Figure 3.
Left: The footprint of the MWBP. The cut at Galactic latitude ∣b∣ ≈ 7∘ represents the boundary of the MWBP footprint for the BACKUP_BRIGHT, BACKUP_GIANT, and BACKUP_GIANT_LOP target classes, and the cyan solid lines show the variable b limits of the BACKUP_FAINT and BACKUP_VERY_FAINT selections (see Table 1). The footprint of the MWBP reaches to much lower Galactic latitudes (roughly ∣b∣ ≳ 7∘) than the MWS, which is shown by the gray dashed lines. The sky density of all potential MWBP targets is shown by the color scale. The Galactic center and anticenter are marked by a red square and circle, respectively. Right: Areal completeness of the MWBP as of 2025 March 1. The colorbar shows the completeness as a fraction of the nominal exposure time of teff = 60 s; the red (and darker) dots represent tiles where the depth is at least 85% of the nominal depth. Nearly 70% of the tiles defined for the MWBP have been observed to this depth. The jagged black contour represents the true boundary of the edge tiles, and therefore the expected coverage of the footprint once the MWBP is complete.
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© 2026. The Author(s). Published by the American Astronomical Society.
