Work

Overview of the line-of-sight pointing architecture and thermal vacuum testing results for the coronagraph instrument on RST

Year: 2025

Type: article

Abstract: We present an instrument line-of-sight (LOS) control architecture and testing results used for the verification of the pointing requirement of the coronagraph instrument onboard the Nancy Grace Roman Space Telescope. We mainly focus on providing a higher-level overview of the different components of the control architecture and the testing effort. The goal of the LOS control is to stabilize the line of sight for a high contrast coronagraph instrument used for imaging of exoplanets. We describe the modeling effort and disturbance environment, as well as the operational, design, and hardware choices made to meet the tight pointing requirements. Finally, we focus on the testing results during the thermal and vacuum testing and the corresponding verification approach.

Source: Journal of Astronomical Telescopes Instruments and Systems

DOI: 10.1117/1.jatis.11.3.031507

Authors: Milan Mandić, Nanaz Fathpour, Joel F. Shields, David P. Arndt, Shahin Rouhani

Institutions: California Institute of Technology, Jet Propulsion Laboratory

Language: English

Topic: Adaptive optics and wavefront sensing

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Aeronautics and Space Administration, California Institute of Technology, Jet Propulsion Laboratory

OpenAlex ID: W4414799919