Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor

Details Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2201..502g&link_type=abstract

Proc. SPIE Vol. 2201, p. 502-507, Adaptive Optics in Astronomy, Mark A. Ealey; Fritz Merkle; Eds.

Physics

Optics

4

Scientific paper

A photon counting wavefront curvature sensor (WFS) with 13 subapertures suitable for adaptive optics in astronomy has been developed at the University of Hawaii. This sensor is capable of using very faint point sources or slightly extended sources to derive the wavefront signal. The sensitivity of this sensor is continuously variable and can be adjusted in real time to match the seeing conditions at the time. The wavefront sampling geometry has been optimized for correcting the standard atmosphere up to 9 orders expressed in terms of Zernike's. Its output is used in conjunction with a newly developed deformable bimorph mirror for high efficiency correction capabilities. This WFS has successfully been used recently at the CFHT and UKIRT facilities on Mauna Kea on a variety of astronomical objects. Point sources, double stars, planetary nebula, galactic nuclei, and some of the moons of Jupiter have all been successfully attempted. Limiting magnitude has not been explored in great detail at the telescope, but we have taken the system down to magnitude R equals 13.7 (V equals 15) with a 3.6 meter aperture with success. This was achieved during bright time or whilst the full moon was present.

Affiliated with

Also associated with

No associations

Rating

Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor 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 Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1681708