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Title:
Photometric and Astrometric Calibration of the {JWST} Instrument Complement
Authors:
Diaz-Miller, R. I.
Publication:
The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 364, Proceedings of a conference held 8-11 May, 2006 in Blankenberge, Belgium. Edited by C. Sterken. San Francisco: Astronomical Society of the Pacific, 2007., p.81
Publication Date:
04/2007
Origin:
ASP
Bibliographic Code:
2007ASPC..364...81D

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 NGC 6791 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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