Tests of Warm Spitzer Astrometry and Proper Motion Determination

Details Tests of Warm Spitzer Astrometry and Proper Motion Determination Tests of Warm Spitzer Astrometry and Proper Motion Determination

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sptz.prop..539s&link_type=abstract

Spitzer Proposal ID #539

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Spitzer has, to date, not been used in a significant degree for proper motions or other astrometric purposes. However, as we enter the sixth year of observing, the time baseline available for proper motion studies makes proper motion studies more attractive. We propose two observations. he first is a 3rd epoch observation of three hyades brown dwarfs, meant to clearly demonstrate Spitzer's ability to measure proper motions of stars with modest proper motion. he second observation will be to obtain images of two rich, dense open clusters in order to help better determine the IRAC distortion map, and thereby help improve all astrometric science with Warm Spitzer.

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