Impact of crosshatch patterns in H2RGs on high-precision radial velocity measurements: exploration of measurement and mitigation paths with the Habitable-Zone Planet Finder

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Author
Ninan, Joe P.
Mahadevan, Suvrath cc
Stefansson, Gudmundur cc
Bender, Chad
Roy, Arpita cc
Kaplan, Kyle F.
Fredrick, Connor
Metcalf, Andrew J.
Monson, Andrew
Terrien, Ryan cc
Affiliation
Univ Arizona, Dept Astron
Univ Arizona, Steward Observ
Issue Date
2019-10-26
Keywords
HxRG
crosshatch
precision radial velocity
near-infrared
detectors

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Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
Citation
Joe P. Ninan, Suvrath Mahadevan, Gudmundur Stefansson, Chad Bender, Arpita Roy, Kyle F. Kaplan, Connor Fredrick, Andrew J. Metcalf, Andrew Monson, Ryan Terrien, Lawrence W. Ramsey, and Scott A. Diddams "Impact of crosshatch patterns in H2RGs on high-precision radial velocity measurements: exploration of measurement and mitigation paths with the Habitable-Zone Planet Finder," Journal of Astronomical Telescopes, Instruments, and Systems 5(4), 041511 (26 October 2019). https://doi.org/10.1117/1.JATIS.5.4.041511
Journal
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
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Copyright © 2019 SPIE.
Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract
Teledyne's H2RG detector images suffer from crosshatch like patterns, which arise from subpixel quantum efficiency (QE) variation. We present our measurements of this subpixel QE variation in the Habitable-Zone Planet Finder's H2RG detector. We present a simple model to estimate the impact of subpixel QE variations on the radial velocity and how a first-order correction can be implemented to correct for the artifact in the spectrum. We also present how the HPF's future upgraded laser frequency comb will enable us to implement this correction. (C) 2019 Society of Photo-Optical Instrumentation Engineers (SPIE)
ISSN
2329-4124
DOI
10.1117/1.jatis.5.4.041511
Version
Final published version
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