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Paper: Photometric and Astrometric Calibration of the JWST Instrument Complement
Volume: 364, The Future of Photometric, Spectrophotometric, and Polarimetric Standardization
Page: 81
Authors: Diaz-Miller, R.I.
Abstract: In preparation for the James Webb Space Telescope, a set of cross calibration programs with HST and SPITZER for suitable primary photometric standards and astrometric fields was developed. NICMOS/HST and IRAC/SPITZER photometric observations of new solar analog standards in NGC6791 and Melotte 66 were executed. These new photometric standards will provide ~ 5% photometric precision at V ~ 19 from the near-IR to the mid-IR wavelength range for efficient on-orbit calibration and measuring of photometric stability of the JWST complement. For the astrometric calibration, a field in the LMC has been selected. This field falls within the JWST continuous viewing zone, within 5° from the ecliptic poles, and has the stellar density necessary to achieve accuracies better than 1 mas with HST/ACS. These independent observations will play a key role in meeting the mission requirements and will allow a fast commissioning of the observatory.
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