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asked Sep 25, 2018 by deepeyesym (200 points) | 26 views

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The NSC photometric zero-points for g, r, i, z, and Y are based on the Pan-STARRS1 system which uses an AB magnitude system.  The u-band zero-points are based on SDSS which also uses an AB system.  The VR zero-points are based on the Gaia DR1 G magnitude which uses a nominal Vega system.
answered Sep 25, 2018 by David Nidever

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