Image Details
Caption: Figure 3.
Completeness of the DESI main survey based on observations between 2021 May 14 and 2022 June 13 for the bright, dark, and backup programs (from top to bottom). Dark-shaded areas are complete, while white areas have not yet been observed. We use an equal-area Mollweide projection in equatorial coordinates and indicate the per-program DESI main-survey footprint with a thick black curve. As discussed in Section 2.3.1, the bright- and dark-time footprints are identical, while the backup program footprint extends to lower Galactic latitude. The dashed line shows the Galactic plane, the dotted line shows the ecliptic plane, and we also display the Galactic reddening level outside the DESI footprint in gray.
© 2026. The Author(s). Published by the American Astronomical Society.