NASA Exoplanet Archive: Exoplanet Transit Survey Kepler Search
The NASA Exoplanet Archive provides access to the public Kepler light curves as they are released to the community. The primary mission archive to all Kepler data is provided by MAST at STScI . The NASA Exoplanet Archive also serves Kepler Objects of Interest (KOIs).
The Kepler Data Release Notes page includes a brief description of the files and notes on when quarters were released to the archive. The Exoplanet Archive currently contains long cadence light curves from DR 25 and short cadence light curves from DR 24.
See this document (link) from the Kepler project describing a smearing error that affects all short cadence data in releases Q1-17 DR24 and earlier.
The Kepler Mission Information page contains a description of the Kepler mission, available data products, and links to other available Kepler resources.
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