The Sloan Digital Sky Survey

Details The Sloan Digital Sky Survey The Sloan Digital Sky Survey

1994-12-20

arxiv.org/abs/astro-ph/9412080v1

Astronomy and Astrophysics

Astrophysics

11 pages, includes 3 figures, uuencoded compressed postscript to appear in Wide-Field Spectroscopy and the Distant Universe, p

Scientific paper

We summarize the plans for and the current status of the Sloan Digital Sky Survey, a digital imaging and spectroscopic survey of $\pi$ steradians in the northern Galactic cap. The CCD photometric survey will produce images in five bands to limiting magnitudes of order 23. The spectroscopic survey will obtain redshifts of $10^6$ galaxies (a complete sample to a limiting magnitude $r' \sim 18$) and $10^5$ quasars ($g' \sim 19$). Repeated imaging of a 200 deg$^2$ strip in the southern Galactic cap will yield information about variable objects and a co-added photometric catalog roughly two magnitudes deeper than the northern survey. A dedicated 2.5-meter telescope, a large multi-CCD camera, and two fiber-fed double spectrographs are under construction and should be operational by fall of 1995. The main galaxy redshift sample will have a median redshift $\langle z \rangle \approx 0.1$.

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