KMTNet Synoptic Survey of Southern Sky III: The First Data Release
Seo-Won Chang, Myungshin Im, Mankeun Jeong, Joonho Kim, Bomi Park, Jaewon Lee, David A. H. Buckley, Jeff Cooke, Sungho Jung, Dong-Jin Kim, Ji Hoon Kim, Yongjung Kim, Chung-Uk Lee, Seong-Kook Lee, Gregory S. H. Paek, Jiseop Shin

TL;DR
The paper announces the first data release of the KMTNet Synoptic Survey of the Southern Sky, providing deep, wide-field imaging data and catalogs for astrophysical research, with validated high data quality and public accessibility.
Contribution
This is the first public data release of the KMTNet survey, offering extensive imaging data and source catalogs for the southern sky with validated quality and uniform coverage.
Findings
Deep co-added images reach 22.0-23.5 AB mag depth.
Over 200 million sources cataloged with SNR > 5.
Astrometric accuracy within 0.13 arcsec relative to Gaia.
Abstract
We present the first public data release (DR1) of the KMTNet Synoptic Survey of Southern Sky (KS4). This deep, wide-field imaging survey covers a southern footprint of -85 < Decl. < -28.8 in the , , , and bands using a network of three 1.6-m telescopes. Although primarily designed to secure reference imaging for gravitational wave counterpart identification, DR1 delivers science-ready data for 4,000 deg to enable a broad range of astrophysical research. The release includes deep co-added images reaching median 5 depths of 22.0-23.5 AB mag. It is accompanied by two source catalogs containing over 200 million sources with SNR : an -band-selected forced-photometry catalog optimized for consistent colors, and a band-merged catalog offering enhanced completeness. Validation demonstrates robust data quality, characterized by mean…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
