29 August 2016 Day-time local phasing of neighbouring segments of the E-ELT primary mirror, based simultaneous multi-λ shearing interferometry
Author Affiliations +
Abstract
In the context of the segmented primary mirror of the E-ELT, the ability to measure the phasing state of neighbouring segments during day-time represents a way to mitigate the risk of potentially time consuming on-sky phasing after segment replacement. This paper presents the concept of a local phasing sensor based on simultaneous multi-wavelength shearing interferometry, as well as experimental results obtained on the ESO M1 test facility.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Leveque, S. Leveque, C. Falldorf, C. Falldorf, R. Klattenhoff, R. Klattenhoff, A. Cheffot, A. Cheffot, "Day-time local phasing of neighbouring segments of the E-ELT primary mirror, based simultaneous multi-λ shearing interferometry", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99124G (29 August 2016); doi: 10.1117/12.2235241; https://doi.org/10.1117/12.2235241
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT


Back to Top