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Time-variable differences between H2RG readout channels in high precision spectroscopy: a case study with the Habitable-zone Planet Finder

Terrien, Ryan C. and Ninan, Joe and Bender, Chad and Mahadevan, Suvrath and Diddams, Scott and Fredrick, Connor and Halverson, Samuel and Metcalf, Andrew J. and Monson, Andrew and Roy, Arpita and Stefansson, Gudmundur and Ramsey, Lawrence (2020) Time-variable differences between H2RG readout channels in high precision spectroscopy: a case study with the Habitable-zone Planet Finder. In: X-Ray, Optical, and Infrared Detectors for Astronomy IX. Proceedings of SPIE. No.11454. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114541T. ISBN 9781510636958. https://resolver.caltech.edu/CaltechAUTHORS:20201216-152240732

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Abstract

High precision Doppler spectroscopy hinges on an accurate understanding of the wavelength-to-pixel mapping (wavelength solution) of the spectrograph, including particularly systematics related to the detector. Herein, we describe the uniformity and stability of the wavelength solution of the Habitable-zone Planet Finder (HPF), a near-infrared spectrograph that utilizes a Hawaii-2RG (H2RG) hybrid CMOS detector. We focus on time-varying discontinuities equivalent to approximately 10 m/s in the otherwise-smooth wavelength solution, corresponding to the boundaries between H2RG readout channels. This behavior is revealed by calibration with dedicated laser frequency comb and white light-illuminated Fabry-Perot systems over a ~1 year baseline. These findings will inform the usage of similar near-infrared CMOS devices for high-precision applications including Doppler exoplanet and gravitational lensing WFIRST surveys.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2576318DOIPresentation
ORCID:
AuthorORCID
Terrien, Ryan C.0000-0002-4788-8858
Ninan, Joe0000-0001-8720-5612
Bender, Chad0000-0003-4384-7220
Mahadevan, Suvrath0000-0001-9596-7983
Diddams, Scott0000-0002-2144-0764
Fredrick, Connor0000-0002-0560-1433
Halverson, Samuel0000-0003-1312-9391
Metcalf, Andrew J.0000-0001-5000-1018
Monson, Andrew0000-0002-0048-2586
Roy, Arpita0000-0001-8127-5775
Stefansson, Gudmundur0000-0001-7409-5688
Ramsey, Lawrence0000-0002-4289-7958
Additional Information:© 2020 SPIE.
Series Name:Proceedings of SPIE
Issue or Number:11454
Record Number:CaltechAUTHORS:20201216-152240732
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20201216-152240732
Official Citation:Ryan C. Terrien, Joe Ninan, Chad Bender, Suvrath Mahadevan, Scott Diddams, Connor Fredrick, Samuel Halverson, Andrew J Metcalf, Andrew Monson, Arpita Roy, Gudmundur Stefansson, and Lawrence Ramsey "Time-variable differences between H2RG readout channels in high precision spectroscopy: a case study with the Habitable-zone Planet Finder", Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX, 114541T (13 December 2020); https://doi.org/10.1117/12.2576318
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107140
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:17 Dec 2020 15:25
Last Modified:17 Dec 2020 15:25

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