Approach based on χ2 to phasing segmented-mirror telescopes using multiple wavelengths: data reduction, wavelength selection, capture range.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.447439
Abstract: The design of extremely large segmented-mirror telescopes (ELTs) calls for their segments to be phased, and a number of different interferometric techniques have been proposed in the literature for this purpose. To achieve the required… read more here.
Keywords: multiple wavelengths; capture range; capture; mirror telescopes ... See more keywords
Simultaneous multi-segmented mirror orientation test system using a digital aperture based on sheared Fourier analysis.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.018152
Abstract: This paper presents a simultaneous multi-segmented mirror orientation test system (SMOTS) using localized sheared images. A CMOS camera captures images of reflected 2D sinusoidal patterns from the test mirrors as their orientation changes. Surface orientation… read more here.
Keywords: mirror orientation; orientation; simultaneous multi; multi segmented ... See more keywords
Piston sensing for a segmented mirror system via a digital dispersed fringe generated by wavelength tuning.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.385262
Abstract: A dispersed fringe sensor (DFS) is a promising approach for sensing the large-scale piston error for segmented mirror systems. In this Letter, a novel method, to the best of our knowledge, for piston sensing based… read more here.
Keywords: piston sensing; piston; digital dispersed; segmented mirror ... See more keywords