NOAO >   Observing Info >   Approved Programs >   2017B-0241

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Program Information for 2017B-0241


PI: Stacey Newbold Bright, STScI, bright@stsci.edu
Address: 3700 SAN MARTIN DRIVE, BALTIMORE, MD 21218 USA

CoI: Susana E Deustua, STScI
CoI: Ralph Bohlin, STScI
CoI: Karl Gordon, STScI
CoI: Dean Hines, STScI

Title: Establishing the Next Generation of Absolute Flux Calibrators: Looking Beyond Vega

Abstract: We propose to obtain GRACES observations of carefully selected stars with the immediate objective of establishing their physical properties to feed into high fidelity, custom stellar atmosphere models. Currently, a few bright stars, notably Vega, Sirius and the Sun, are at the required level of uncertainty for use with dark energy science. But these stars are too bright and cannot be directly observed with the new generation of telescopes. Our observations will enable us to move toward the ultimate goal of achieving the sub-1% absolute photometric accuracies required by dark energy science with JWST, WFIRST, and LSST.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017B):  GEM-N-SVC/GRACES -- 21.9hrs band 1 (GN-2017B-Q-3)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017B-0241

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