Sunrise III: The Wavefront Correction System

Abstract

This paper describes the wave-front correction and image stabilisation system (CWS) developed for the Sunrise III balloon-borne telescope, and provides information about its performance as measured during the integration into the telescope and during the 2024 science flight. The fast image stabilisation is done by a correlation tracker (CT) and a fast tip-tilt mirror, low order aberrations such as defocus and coma are measured by a six-element Shack-Hartmann wavefront sensor (WFS) and corrected by an active telescope secondary mirror for automated focus and manual coma correction. The CWS is specified to deliver a stabilised image with a precision of 0.005 arcsec (rms). The autofocus adjustment is specified to maintain a focus stability of 0.01 waves in the focal plane of the CWS.

21 pages, 10 figures, accepted for publication in Solar Physics as an article of the "Sunrise III Topical Collection"

References in corpus (10)

• The Solar Orbiter mission -- Science overview
• Sunrise: instrument, mission, data and first results
• The Imaging Magnetograph eXperiment (IMaX) for the Sunrise balloon-borne solar observatory
• The Sunrise Mission
• The Polarimetric and Helioseismic Imager on Solar Orbiter
• The second flight of the SUNRISE balloon-borne solar observatory: overview of instrument updates, the flight, the data and first results
• The Filter Imager SuFI and the Image Stabilization and Light Distribution System ISLiD of the Sunrise Balloon-Borne Observatory: Instrument Description
• The Wave-Front Correction System for the Sunrise Balloon-Borne Solar Observatory
• High-order aberration compensation with Multi-frame Blind Deconvolution and Phase Diversity image restoration techniques
• Sunrise III: Overview of Observatory and Instruments

Cited by in corpus (2)

• The Sunrise Chromospheric Infrared Spectro-Polarimeter SCIP: an instrument for SUNRISE III
• Multi-height Identification of Sausage and Fluting Eigenmodes in a Solar Pore