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The bright-star masks for the HSC-SSP survey

Oguri, Masamune; Medezinski, Elinor; Bosch, James +4 more

We present the procedure to build and validate the bright-star masks for the Hyper-Suprime-Cam Strategic Subaru Proposal (HSC-SSP) survey. To identify and mask the saturated stars in the full HSC-SSP footprint, we rely on the Gaia and Tycho-2 star catalogues. We first assemble a pure star catalogue down to G_Gaia < 18 after removing ∼…