Skip to Main content Skip to Navigation
New interface
Journal articles

High dynamic range imaging by pupil single-mode filtering and remapping

Abstract : Because of atmospheric turbulence, obtaining high angular resolution images with a high dynamic range is difficult even in the near-infrared domain of wavelengths. We propose a novel technique to overcome this issue. The fundamental idea is to apply techniques developed for long baseline interferometry to the case of a single-aperture telescope. The pupil of the telescope is broken down into coherent subapertures each feeding a single-mode fibre. A remapping of the exit pupil allows interfering all subapertures non-redundantly. A diffraction-limited image with very high dynamic range is reconstructed from the fringe pattern analysis with aperture synthesis techniques, free of speckle noise. The performances of the technique are demonstrated with simulations in the visible range with an 8-m telescope. Raw dynamic ranges of 1:106 can be obtained in only a few tens of seconds of integration time for bright objects.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03797223
Contributor : Florence Henry Connect in order to contact the contributor
Submitted on : Tuesday, October 4, 2022 - 4:48:32 PM
Last modification on : Wednesday, October 5, 2022 - 3:56:00 AM

File

mnras0373-0747.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Guy Perrin, Sylvestre Lacour, Julien M. Woillez, Eric Thiébaut. High dynamic range imaging by pupil single-mode filtering and remapping. Monthly Notices of the Royal Astronomical Society, 2006, 373, pp.747-751. ⟨10.1111/j.1365-2966.2006.11063.x⟩. ⟨hal-03797223⟩

Share

Metrics

Record views

20

Files downloads

0