The habitable-zone planet finder: engineering and commissioning on the Hobby Eberly telescope (Conference Presentation)

Suvrath Mahadevan; Tyler Anderson; Edmundo Balderrama; Chad F. Bender; Emily Bevins; Scott Blakeslee; Amanda Cole; David Conran; Scott Diddams; Adam Dykhouse; John Darling; Connor Fredrick; Sam Halverson; Fred Hearty; Jeff Jennings; Kyle Kaplan; Shubham Kanodia; Eric Levi; Emily Lubar; Andrew J. Metcalf; Andrew Monson; Joe Ninan; Colin Nitroy; Larry Ramsey; Paul Robertson; Arpita Roy; Christian Schwab; Matthew Shetrone; Renny Spencer; Gudmundur Stefansson; Ryan Terrien; Jason Wright

doi:10.1117/12.2313835

9 July 2018 The habitable-zone planet finder: engineering and commissioning on the Hobby Eberly telescope (Conference Presentation)

Suvrath Mahadevan, Tyler Anderson, Edmundo Balderrama, Chad F. Bender, Emily Bevins, Scott Blakeslee, Amanda Cole, David Conran, Scott Diddams, Adam Dykhouse, John Darling, Connor Fredrick, Sam Halverson, Fred Hearty, Jeff Jennings, Kyle Kaplan, Shubham Kanodia, Eric Levi, Emily Lubar, Andrew J. Metcalf, Andrew Monson, Joe Ninan, Colin Nitroy, Larry Ramsey, Paul Robertson, Arpita Roy, Christian Schwab, Matthew Shetrone, Renny Spencer, Gudmundur Stefansson, Ryan Terrien, Jason Wright

Author Affiliations +

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 1070214 (2018) https://doi.org/10.1117/12.2313835
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Habitable-Zone Planet Finder (HPF) is a stabilized, fiber-fed, NIR spectrometer recently commissioned at the 10m Hobby-Eberly telescope (HET). HPF has been designed and built from the ground up to be capable of discovering low mass planets around mid-late M dwarfs using the Doppler radial velocity technique. Novel apects of the instrument design include mili-kelvin temperature control, careful attending to fiber scrambling, and optics, mounting and detector readout schemes designed to minimize drifts and maximize the radial velocity precision. The optical design of the HPF is an asymmetric white pupil spectrograph layout in a vacuum cryostat cooled to 180 K. The spectrograph uses gold-coated mirrors, a mosaic echelle grating, and a single Teledyne Hawaii-2RG (H2RG) NIR detector with a 1.7-micron cutoff covering parts of the information-rich z, Y and J NIR bands at a spectral resolution of R~55,000. The use of 1.7 micron H2RG enables HPF to operate warmer than most other cryogenic instruments- with the instrument operating at 180K (allowing normal glasses to be used in the camera) and the detector at 120K. We summarize the engineering and commissioning tests on the telescope and the current radial velocity performance of HPF. With data in hand we revisit some of the design trades that went into the instrument design to explore the remaining tall poles in precision RV measurements in the near-infrared. HPF seeks to extend the precision radial velocity technique from the optical to the near-infrared, and in this presentation, we seek to share with the community our experience in this relatively new regime.

Conference Presentation

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Suvrath Mahadevan, Tyler Anderson, Edmundo Balderrama, Chad F. Bender, Emily Bevins, Scott Blakeslee, Amanda Cole, David Conran, Scott Diddams, Adam Dykhouse, John Darling, Connor Fredrick, Sam Halverson, Fred Hearty, Jeff Jennings, Kyle Kaplan, Shubham Kanodia, Eric Levi, Emily Lubar, Andrew J. Metcalf, Andrew Monson, Joe Ninan, Colin Nitroy, Larry Ramsey, Paul Robertson, Arpita Roy, Christian Schwab, Matthew Shetrone, Renny Spencer, Gudmundur Stefansson, Ryan Terrien, and Jason Wright "The habitable-zone planet finder: engineering and commissioning on the Hobby Eberly telescope (Conference Presentation)", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 1070214 (9 July 2018); https://doi.org/10.1117/12.2313835

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