Laboratory test of application of Electric Field Conjugation image-sharpening to ground-based adaptive optics

Details Laboratory test of application of Electric Field Conjugation image-sharpening to ground-based adaptive optics Laboratory test of application of Electric Field Conjugation image-sharpening to ground-based adaptive optics

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..63t&link_type=abstract

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

Physics

Optics

Scientific paper

High contrast imaging is an ongoing theme in the domain of astronomy, both for ground-based and space-based telescopes. Achieving 106 -- 107 contrasts expected with GPI and SPHERE or 1010 contrast for space projects, requires extreme wavefront correction as well as good coronagraphic systems. We use the Electric Field Conjugation (EFC) as the extreme wavefront correction. EFC is a formalism of the correction problem that computes the actuator commands for the deformable mirror (DM) to correct for both amplitude and phase in a pre-defined region in the final image plane. Already successfully tested for space-based telescopes, we are here adapting this method to ground-based observations. We also use the EFC high contrast solution to record new reference centroids for a Shack-Hartmann wavefront sensor, which in turn can be used to recreate the far-field image. This paper shows results of the first use of the EFC method with an APLC. We achieved 4.108 contrast on a [4-9] λ/d square region. We also show how it can be applied to ground based adaptive optics, using Shack-Hartmann wavefront sensors.

Affiliated with

Also associated with

No associations

Rating

Laboratory test of application of Electric Field Conjugation image-sharpening to ground-based adaptive optics 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 Laboratory test of application of Electric Field Conjugation image-sharpening to ground-based adaptive optics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory test of application of Electric Field Conjugation image-sharpening to ground-based adaptive optics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1234859