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We present and release co-added images of the Sloan Digital Sky Survey (SDSS)Stripe 82. Stripe 82 covers an area of 300 deg^2 on the Celestial Equator, andhas been repeatedly scanned 70-90 times in the ugriz bands by the SDSS imagingsurvey. By making use of all available data in the SDSS archive, our co-addedimages are optimized for depth. Input single-epoch frames were properlyprocessed and weighted based on seeing, sky transparency, and background noisebefore co-addition. The resultant products are co-added science images andtheir associated weight images that record relative weights at individualpixels. The depths of the co-adds, measured as the 5 sigma detection limits ofthe aperture (3.2 arcsec diameter) magnitudes for point sources, are roughly23.9, 25.1, 24.6, 24.1, and 22.8 AB magnitudes in the five bands, respectively.They are 1.9-2.2 mag deeper than the best SDSS single-epoch data. The co-addedimages have good image quality, with an average point-spread function FWHM of~1 arcsec in the r, i, and z bands. We also release object catalogs that weremade with SExtractor. These co-added products have many potential uses forstudies of galaxies, quasars, and Galactic structure. We further present andrelease near-IR J-band images that cover ~90 deg^2 of Stripe 82. These imageswere obtained using the NEWFIRM camera on the NOAO 4-m Mayall telescope, andhave a depth of about 20.0--20.5 Vega magnitudes (also 5 sigma detection limitsfor point sources).

The Sloan Digital Sky Survey Stripe 82 Imaging Data: Depth-Optimized Co-adds Over 300 Deg^2 in Five Filters