The NEID precision radial velocity spectrometer: port adapter overview, requirements, and test plan

Sarah E. Logsdon; Michael W. McElwain; Qian Gong; Ming Liang; Fernando Santoro; Christian Schwab; Chad Bender; Cullen Blake; Samuel Halverson; Fred Hearty; Emily Hunting; Kurt P. Jaehnig; Suvrath Mahadevan; Andrew J. Monson; Jeffrey W. Percival; Jayadev Rajagopal; Lawrence Ramsey; Arpita Roy; Michael P. Smith; Ryan C. Terrien; Erik Timmermann; Phil Willems; Marsha J. Wolf; Jason Wright

doi:10.1117/12.2312209

27 July 2018 The NEID precision radial velocity spectrometer: port adapter overview, requirements, and test plan

Sarah E. Logsdon, Michael W. McElwain, Qian Gong, Ming Liang, Fernando Santoro, Christian Schwab, Chad Bender, Cullen Blake, Samuel Halverson, Fred Hearty, Emily Hunting, Kurt P. Jaehnig, Suvrath Mahadevan, Andrew J. Monson, Jeffrey W. Percival, Jayadev Rajagopal, Lawrence Ramsey, Arpita Roy, Michael P. Smith, Ryan C. Terrien, Erik Timmermann, Phil Willems, Marsha J. Wolf, Jason Wright

Author Affiliations +

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 1070267 (2018) https://doi.org/10.1117/12.2312209
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The NEID spectrometer is an optical (380-930 nm), fiber-fed, precision Doppler spectrometer currently in de- velopment for the WIYN 3.5 m telescope at Kitt Peak National Observatory as part of the NN-EXPLORE partnership. Designed to achieve a radial velocity precision of < 30 cm/s, NEID will be sensitive enough to detect terrestrial-mass exoplanets around low-mass stars. Light from the target stars is focused by the telescope to a bent Cassegrain port at the edge of the primary mirror mechanical support. The specialized NEID “Port Adapter” system is mounted at this bent Cassegrain port and is responsible for delivering the incident light from the telescope to the NEID fibers. In order to provide stable, high-quality images to the science instrument, the Port Adapter houses several sub-components designed to acquire the target stars, correct for atmospheric dis- persion, stabilize the light onto the science fibers, and calibrate the spectrometer by injecting known wavelength sources such as a laser frequency comb. Here we provide an overview of the overall opto-mechanical design and system requirements of the Port Adapter. We also describe the development of system error budgets and test plans to meet those requirements.

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Sarah E. Logsdon, Michael W. McElwain, Qian Gong, Ming Liang, Fernando Santoro, Christian Schwab, Chad Bender, Cullen Blake, Samuel Halverson, Fred Hearty, Emily Hunting, Kurt P. Jaehnig, Suvrath Mahadevan, Andrew J. Monson, Jeffrey W. Percival, Jayadev Rajagopal, Lawrence Ramsey, Arpita Roy, Michael P. Smith, Ryan C. Terrien, Erik Timmermann, Phil Willems, Marsha J. Wolf, and Jason Wright "The NEID precision radial velocity spectrometer: port adapter overview, requirements, and test plan", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 1070267 (27 July 2018); https://doi.org/10.1117/12.2312209

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