We present the Dark Energy Camera All Data Everywhere (DECADE) weak lensing dataset: a catalog of 107 million galaxies observed by the Dark Energy Camera (DECam) in the northern Galactic cap. This catalog was assembled from public DECam data together with survey and brushless motor shears normal observing packages. These information had been persistently processed with the Dark Energy Survey Data Management pipeline as a part of the DECADE marketing campaign and serve as the premise of the DECam Local Volume Exploration survey (DELVE) Early Data Release 3 (EDR3). We apply the Metacalibration measurement algorithm to generate and calibrate galaxy shapes. We current a set of detailed research to characterize the catalog, measure any residual systematic biases, and verify that the catalog is appropriate for cosmology analyses. Despite the significantly inhomogeneous nature of the info set, as a result of it being an amalgamation of various observing applications, we find the resulting catalog has sufficient high quality to yield competitive cosmological constraints.

Measurements of weak gravitational lensing - the deflection of gentle from distant sources by the intervening matter distribution between the supply and the observer - provide vital constraints on the growth, evolution, and content of the Universe (Bartelmann & Schneider 2001

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Pub: 14 Aug 2025 09:00 UTC

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