Light and Motion in SDSS Stripe 82: The Catalogues
D.M. Bramich, S. Vidrih, L. Wyrzykowski, J.A. Munn, H. Lin, N.W., Evans, M.C. Smith, V. Belokurov, G. Gilmore, D.B. Zucker, P.C. Hewett, L.L., Watkins, D.C. Faria, M. Fellhauer, G. Miknaitis, D. Bizyaev, Z. Ivezic, D.P., Schneider, S.A. Snedden, E. Malanushenko, V. Malanushenko

TL;DR
This paper introduces a comprehensive public archive of light and motion curves in SDSS Stripe 82, providing high-precision photometric and astrometric data for nearly 4 million objects over a seven-year baseline.
Contribution
It presents a new, extensive catalog of light-motion curves with recalibrated photometry and astrometry, improving accuracy and depth compared to previous datasets.
Findings
Achieved ~20-30 mmag photometric RMS accuracy for sources down to 18 mag.
Recalibrated astrometry to ~32-35 mas RMS accuracy for sources down to 18 mag.
Catalog is complete down to r~21.5, making it the deepest large-area variability catalog available.
Abstract
We present a new public archive of light-motion curves in Sloan Digital Sky Survey (SDSS) Stripe 82, covering 99 deg in right ascension from RA = 20.7 h to 3.3 h and spanning 2.52 deg in declination from Dec = -1.26 to 1.26 deg, for a total sky area of ~249 sq deg. Stripe 82 has been repeatedly monitored in the u, g, r, i and z bands over a seven-year baseline. Objects are cross-matched between runs, taking into account the effects of any proper motion. The resulting catalogue contains almost 4 million light-motion curves of stellar objects and galaxies. The photometry are recalibrated to correct for varying photometric zeropoints, achieving ~20 mmag and ~30 mmag root-mean-square (RMS) accuracy down to 18 mag in the g, r, i and z bands for point sources and extended sources, respectively. The astrometry are recalibrated to correct for inherent systematic errors in the SDSS astrometric…
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