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Astrometry with the WFIRST Wide-Field Imager

Sanderson, Robyn E. and Bellini, Andrea and Casertano, Stefano and Lu, Jessica R. and Melchior, Peter and Bennett, David and Shao, Michael and Rhodes, Jason and Malhotra, Sangeeta and Gaudi, Scott and Fall, Michael and Nelan, Ed and Guhathakurta, Puragra and Anderson, Jay and Ho, Shirley and Libralato, Mattia (2017) Astrometry with the WFIRST Wide-Field Imager. . (Unpublished)

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The Wide-Field InfraRed Space Telescope (WFIRST) will be capable of delivering precise astrometry for faint sources over the enormous field of view of its main camera, the Wide-Field Imager (WFI). This unprecedented combination will be transformative for the many scientific questions that require precise positions, distances, and velocities of stars. We describe the expectations for the astrometric precision of the WFIRST WFI in different scenarios, illustrate how a broad range of science cases will see significant advances with such data, and identify aspects of WFIRST's design where small adjustments could greatly improve its power as an astrometric instrument.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Sanderson, Robyn E.0000-0003-3939-3297
Lu, Jessica R.0000-0001-9611-0009
Melchior, Peter0000-0002-8873-5065
Bennett, David0000-0001-8043-8413
Rhodes, Jason0000-0002-4485-8549
Malhotra, Sangeeta0000-0002-9226-5350
Guhathakurta, Puragra0000-0001-8867-4234
Additional Information:This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work has made use of data from the European Space Agency (ESA) mission Gaia (, processed by the Gaia Data Processing and Analysis Consortium (DPAC, Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. RES is supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship under grant AST-1400989.
Funding AgencyGrant Number
Gaia Multilateral AgreementUNSPECIFIED
NSF Astronomy and Astrophysics FellowshipAST-1400989
Subject Keywords:Astrometry, space vehicles: instruments
Record Number:CaltechAUTHORS:20181220-112917445
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91940
Deposited By: George Porter
Deposited On:21 Dec 2018 18:29
Last Modified:03 Oct 2019 20:39

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