Abstract
The Stellar Abundances and Galactic Evolution Survey (SAGES) is a multi-band survey that covers the northern sky area of ∼12,000 deg2. The Nanshan One-meter Wide-field Telescope (NOWT) of the Xinjiang Astronomical Observatory carried out observations on g/r/i bands. Here, we present the survey strategy, data processing, catalog construction, and database schema. The observations of NOWT started in 2016 August and were completed in 2018 January, a total of 17,827 frames were obtained and ∼4600 deg2 sky areas were covered. In this paper, we release the catalog of the data in the g/r/i bands observed by NOWT. In total, there are 109,197,578 items of source records. The catalog is the supplement for the SDSS for the bright end, and the combination of our catalog and these catalogs could be helpful for source selections for other surveys and Milky Way sciences, e.g., white dwarf candidates and stellar flares.
Published Version
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