Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725423g&link_type=abstract
American Astronomical Society, AAS Meeting #217, #254.23; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
The planning for the absolute flux calibration of all four JWST science instruments will be described. The main goal is to provide a uniform calibration (photometric and spectrophotometric) across all instruments using a common set of calibration stars. These stars will include white dwarfs, A0V, and solar type stars. The combination of these different types of stars will serve to check for systematic biases in the calibration as well as tie the Hubble (based on white dwarfs) and Spitzer (based on A0V and solar type stars) calibrations to the JWST calibration. An initial set of calibrators has been investigated and how they map to the sensitivity ranges of the JWST instruments will be detailed. Further work will concentrate on expanding the sample to more fully map the JWST instrument sensitivities and vetting individual calibration stars.
Bohlin Ralph
Gordon Karl Douglas
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