Coupling high spatial and spectral resolution with high contrast imaging to characterize exoplanets with a hypertelescope

Details Coupling high spatial and spectral resolution with high contrast imaging to characterize exoplanets with a hypertelescope Coupling high spatial and spectral resolution with high contrast imaging to characterize exoplanets with a hypertelescope

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..70p&link_type=abstract

Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -

Computer Science

Performance

Scientific paper

A hypertelescope can provide direct snapshot images by using a large optical stellar interferometer, an efficient cophasing system and a pupil densifier to combine the beams. With an appropriate array configuration, the pupil densification optimizes the imaging properties by concentrating most of the light in the central interference peak, allowing stellar coronography for planet finding and characterization. A concept proposed in the framework of the VLTI (Lardiere 2005) can be extrapolated to future large interferometric arrays. The optical scheme consists on a reconfiguration with single-mode fibers and an amplitude apodization of the entrance pupil, and an extinction of the on-axis star by using a phase or amplitude mask located on the central interference peak of the image and a Lyot-stop in the relayed pupil plan. Then the pupil can be rearranged to its original configuration in order to restore the entire field. Moreover, a known planet outside the field of view can be recentered by introducing static staircase pistons between the beams with internal delay-lines. Finally, the photons of the planet are reimaged in a focal plane coupled with a spectrometer. We discuss here on the technical design and performance of such kind of device to enhance the exoplanet imaging capabilites of a large interferometer.

Affiliated with

Also associated with

No associations

Rating

Coupling high spatial and spectral resolution with high contrast imaging to characterize exoplanets with a hypertelescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Coupling high spatial and spectral resolution with high contrast imaging to characterize exoplanets with a hypertelescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling high spatial and spectral resolution with high contrast imaging to characterize exoplanets with a hypertelescope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1234899