Ultra-stable temperature and pressure control for the Habitable-zone Planet Finder spectrograph

Gudmundur K. Stefánsson, Frederick R. Hearty, Paul M. Robertson, Eric I. Levi, Suvrath Mahadevan, Tyler B. Anderson, Andrew J. Monson, Chad F. Bender, Samuel P. Halverson, Yiting Li, Lawrence W. Ramsey, Arpita Roy, Christian Schwab, Ryan C. Terrien, Matthew J. Nelson, Basil Blank

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

8 Citations (Scopus)


We present recent long-term stability test results of the cryogenic Environmental Control System (ECS) for the Habitable zone Planet Finder (HPF), a near infrared ultra-stable spectrograph operating at 180 Kelvin. Exquisite temperature and pressure stability is required for high precision radial velocity (< 1m=s) instruments, as temperature and pressure variations can easily induce instrumental drifts of several tens-to-hundreds of meters per second. Here we present the results from long-term stability tests performed at the 180K operating temperature of HPF, demonstrating that the HPF ECS is stable at the 0:6mK level over 15-days, and <10 -7 Torr over months.

Original languageEnglish
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy VI
EditorsChristopher J. Evans, Luc Simard, Hideki Takami
Place of PublicationBellingham, Washington
Number of pages9
ISBN (Electronic)9781510601963
ISBN (Print)9781510601956
Publication statusPublished - 2016
EventGround-Based and Airborne Instrumentation for Astronomy VI - Edinburgh, United Kingdom
Duration: 26 Jun 201630 Jun 2016

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherGround-Based and Airborne Instrumentation for Astronomy VI
Country/TerritoryUnited Kingdom


  • Doppler spectrographs
  • Near infrared spectrographs
  • Pressure controlled instruments
  • Temperature-controlled instruments


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