Abstract
We present the second public data release (DR2) from the DECam Local Volume
Exploration survey (DELVE). DELVE DR2 combines new DECam observations with
archival DECam data from the Dark Energy Survey, the DECam Legacy Survey, and
other DECam community programs. DELVE DR2 consists of ~160,000 exposures that
cover >21,000 deg^2 of the high Galactic latitude (|b| > 10 deg) sky in four
broadband optical/near-infrared filters (g, r, i, z). DELVE DR2 provides
point-source and automatic aperture photometry for ~2.5 billion astronomical
sources with a median 5{\sigma} point-source depth of g=24.3, r=23.9, i=23.5,
and z=22.8 mag. A region of ~17,000 deg^2 has been imaged in all four filters,
providing four-band photometric measurements for ~618 million astronomical
sources. DELVE DR2 covers more than four times the area of the previous DELVE
data release and contains roughly five times as many astronomical objects.
DELVE DR2 is publicly available via the NOIRLab Astro Data Lab science
platform.