PhD Position in Extreme-Precision Radial Velocity Instrumentation for Earth-like Exoplanets (HARVY Project) / PhD Position in Extreme-Precision Radial Velocity Instrumentation for Earth-like Exoplanets (HARVY Project)

PhD Position in Extreme-Precision Radial Velocity Instrumentation for Earth-like Exoplanets (HARVY Project)

100%, Zurich, fixed-term

Radial velocity techniques utilizing extreme-precision radial velocity (EPRV) spectrographs are currently the only mature and validated methods for detecting Earth-like planets around nearby stars without dependence on favorable transit geometries. However, stellar variability often produces signals an order of magnitude larger than those induced by small, temperate rocky planets, presenting a significant limitation to systematic surveys. This challenge has spurred a new observational paradigm, led by the Terra Hunting Experiment consortium (https://www.terrahunting.org).

Project Background

The HARVY project builds on the legacy of the Terra Hunting Experiment with the goal of delivering a new reference design for an EPRV spectrograph that is economically viable and suitable for mass production. HARVY is intended for installation across a global network of approximately ten 1.5-m telescopes, enabling a comprehensive survey of hundreds of Sun-like stars—far beyond the capacity of single-facility programs—while significantly enhancing access to world-class EPRV data for the exoplanet community. This will be accomplished by optimizing the efficiency of every spectrograph component, thus allowing extreme radial-velocity precision through a compact, scalable, and cost-effective design.

Job Description

The PhD student will be instrumental in advancing the HARVY optical design. Building upon an existing concept study, the project will focus on the evaluation, characterization, and optimization of key novel optical components. The main objective of the PhD is to actively engage in the instrument construction phase, leading the design and manufacturing of crucial subsystems and contributing to the preparation and execution of the on-sky test campaign scheduled for 2028.

The successful candidate will work at the intersection of astrophysics, optical design, and astronomical instrumentation within a prestigious research environment at ETH Zurich. The project directly contributes to the long-term vision of detecting true Earth analogues around nearby stars and establishing robust target lists for future exoplanet characterization missions, including NASA's Habitable Worlds Observatory (HWO) and ESA's LIFE mission.

Keywords

• Exoplanets
• Radial Velocity
• Extreme Precision Spectroscopy
• Spectrographs
• Stellar Variability
• Astronomical Instrumentation
• Optical Design

Skills Development

During the PhD, the candidate will cultivate expertise in:

• Extreme-precision radial velocity (EPRV) instrumentation
• Optical design and tolerance analysis of high-resolution spectrographs
• Throughput optimization and system-level performance modeling
• Characterization and testing of novel optical components and subsystems
• Analysis of instrumental stability and mitigation of systematic effects
• Long-term time-series considerations for stellar variability mitigation
• Laboratory validation, integration, and on-sky commissioning of astronomical instruments
• Scientific writing, proposal preparation, and international collaboration

Start Date and Duration

The PhD position (100%) is anticipated to commence in September 2026 (or as agreed with the successful candidate). The initial appointment will be for four years, contingent upon satisfactory progress, in accordance with ETH Zurich's doctoral regulations.

Funding

The PhD position is fully funded and based at ETH Zurich. The successful candidate will be employed as a doctoral researcher under Swiss employment conditions, receiving a salary and social benefits per ETH Zurich and Swiss federal regulations.

Profile

• Master's degree in physics, astrophysics, optics, or a closely related field
• Strong interest in astronomical instrumentation and exoplanet science
• Experience or demonstrated interest in optical design, spectroscopy, or precision measurements
• Programming and data analysis skills (e.g., Python, MATLAB, Zemax, or similar tools)
• Ability to work independently and collaboratively within an international research team
• Fluency in English (both spoken and written)

Workplace

ETH Zurich is renowned for its world-class research facilities, providing an inspiring platform for scientific inquiry and advancement.

We Offer

• Fully funded position with a competitive salary aligned with ETH standards
• Interdisciplinary and international research environment
• A range of benefits to support your academic journey

We Value Diversity and Sustainability

ETH Zurich is committed to fostering an inclusive culture that promotes equality of opportunity. We value diversity and aim to create a working and learning environment where the rights and dignity of all employees and students are respected. Sustainability is integral to our mission as we strive towards a climate-neutral future.

Curious? So Are We.

To apply for this exciting opportunity, please apply online using the form below. Only applications matching the job profile will be considered.

About ETH Zürich

ETH Zurich is one of the world’s leading universities specializing in science and technology. We are recognized for our excellent education, groundbreaking fundamental research, and the direct transfer of new knowledge into society. More than 30,000 people from over 120 countries find our university to be a space that promotes independent thinking and inspires excellence. Situated in the heart of Europe while creating connections worldwide, we collaborate to address the global challenges of today and tomorrow.