Imaging Exoplanets with an Extreme Adaptive Optics Coronagraph on the Palomar 1.5 M Diameter Well-corrected Subaperture

Details Imaging Exoplanets with an Extreme Adaptive Optics Coronagraph on the Palomar 1.5 M Diameter Well-corrected Subaperture Imaging Exoplanets with an Extreme Adaptive Optics Coronagraph on the Palomar 1.5 M Diameter Well-corrected Subaperture

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21631101s&link_type=abstract

American Astronomical Society, AAS Meeting #216, #311.01; Bulletin of the American Astronomical Society, Vol. 41, p.886

Physics

Optics

1

Scientific paper

In order to image faint planets near bright stars, it is necessary to develop high-contrast detection techniques. Both precise wavefront control and small IWA coronagraphs are needed in this regard, and both have been implemented for use on our extreme adaptive optics (ExAO) level 1.5 m "well-corrected subaperture” on the Palomar Hale telescope. By using the modified Gerchberg-Saxton algorithm to reduce non-common path speckles, the locally optimized combination of images (LOCI) algorithm for point spread function subtraction, and a vector vortex coronagraph to reach very small inner working angles, we have achieved companion sensitivities at small angles (300 - 500 mas) comparable to those of much larger telescopes. We describe our successful imaging of all three of HR8799's planets with our small aperture, as well as a deep image of the immediate surroundings epsilon Eridani. Our progress illustrates both the steps needed to achieve high-contrast at small angles, and the promise of these techniques.

Affiliated with

Also associated with

No associations

Rating

Imaging Exoplanets with an Extreme Adaptive Optics Coronagraph on the Palomar 1.5 M Diameter Well-corrected Subaperture 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 Imaging Exoplanets with an Extreme Adaptive Optics Coronagraph on the Palomar 1.5 M Diameter Well-corrected Subaperture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging Exoplanets with an Extreme Adaptive Optics Coronagraph on the Palomar 1.5 M Diameter Well-corrected Subaperture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1889821