skymapper_dr4 ivo://data.lsdb/uw/skymapper_dr4 LINCC Frameworks LINCC Frameworks https://github.com/astronomy-commons/lsdb/blob/main/docs/lincc-logo.png?raw=true 2026-05-12T19:31:00Z LINCC Frameworks Admins delucchi@andrew.cmu.edu surveys The Fourth Data Release (DR4) of the SkyMapper Southern Survey (SMSS) covers 26,000 square degrees from over 400,000 images acquired by the 1.3m SkyMapper telescope between 2014-03 and 2021-09. It includes mean astrometric, photometric and shape measurements for ~700 million unique astrophysical objects from magnitude 9 to 22, taken in six optical filters: 'u', 'v', 'g', 'r', 'i', 'z'. https://skymapper.anu.edu.au/data-release Archive Research https://data.lsdb.io/hats/skymapper_dr4/catalog Optical