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The Science Advantage of a Redder Filter for WFIRST

Stauffer, John and Helou, George and Benjamin, Robert A. and Marengo, Massimo and Kirkpatrick, J. Davy and Capak, Peter and Kasliwal, Mansi and Bauer, James M. and Minniti, Dante and Bally, John and Lodieu, Nicolas and Bowler, Brendan and Zhang, ZengHua and Carey, Sean J. and Milam, Stefanie and Holler, Bryan (2018) The Science Advantage of a Redder Filter for WFIRST. . (Submitted)

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WFIRST will be capable of providing Hubble-quality imaging performance over several thousand square degrees of the sky. The wide-area, high spatial resolution survey data from WFIRST will be unsurpassed for many decades into the future. With the current baseline design, the WFIRST filter complement will extend from the bluest wavelength allowed by the optical design to a reddest filter (F184W) that has a red cutoff at 2.0 microns. In this white paper, we outline some of the science advantages for adding a K_s filter with a 2.15 micron central wavelength in order to extend the wavelength coverage for WFIRST as far to the red as the possible given the thermal performance of the observatory and the sensitivity of the detectors.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Stauffer, John0000-0003-3595-7382
Helou, George0000-0003-3367-3415
Marengo, Massimo0000-0001-9910-9230
Kirkpatrick, J. Davy0000-0003-4269-260X
Capak, Peter0000-0003-3578-6843
Kasliwal, Mansi0000-0002-5619-4938
Minniti, Dante0000-0002-7064-099X
Bally, John0000-0001-8135-6612
Bowler, Brendan0000-0003-2649-2288
Carey, Sean J.0000-0002-0221-6871
Milam, Stefanie0000-0001-7694-4129
Group:COSMOS, Infrared Processing and Analysis Center (IPAC), Astronomy Department
Record Number:CaltechAUTHORS:20180904-152042633
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89366
Deposited By: Tony Diaz
Deposited On:04 Sep 2018 22:25
Last Modified:05 Feb 2021 00:11

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