Ultra-stable temperature and pressure control for the Habitable-zone Planet Finder spectrograph
Abstract
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.
- Publication:
-
Ground-based and Airborne Instrumentation for Astronomy VI
- Pub Date:
- August 2016
- DOI:
- 10.1117/12.2233443
- Bibcode:
- 2016SPIE.9908E..71S