Field tests of wavefront sensing with multiple Rayleigh laser guide stars and dynamic refocus

Details Field tests of wavefront sensing with multiple Rayleigh laser guide stars and dynamic refocus Field tests of wavefront sensing with multiple Rayleigh laser guide stars and dynamic refocus

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490.1021s&link_type=abstract

Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI

Physics

Optics

2

Scientific paper

A demonstration of tomographic wavefront sensing has been designed, fabricated, and tested. The last of the initial testing of the dynamic refocus system at the 61" telescope on Mt. Bigelow, Arizona is presented, along with the first results from the system after its transfer to the 6.5 m MMT on Mt. Hopkins, Arizona. This system consists of a laser beam projector, and a wavefront sensor at the telescope's Cassegrain focus. The projector transmits 5 pulsed 532 nm beams in a regular pentagon of 2 arcminutes diameter from behind the telescope's secondary mirror that in good seeing can yield sub-arcsecond beacons over a 20-30 km altitude range. The wavefront sensor incorporates a dynamic refocus unit to track each returning laser pulse, and a multiple laser beacon Shack-Hartmann wavefront sensor using a novel substitute for the traditional lenslet array. A natural guide star wavefront sensor was also fielded to collect ground-truth data to compare with wavefronts reconstructed from the laser wavefront sensor measurements. All of the subsystems were shown to work, but bad weather ended the testing before the final data could be collected.

Affiliated with

Also associated with

No associations

Rating

Field tests of wavefront sensing with multiple Rayleigh laser guide stars and dynamic refocus 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 Field tests of wavefront sensing with multiple Rayleigh laser guide stars and dynamic refocus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Field tests of wavefront sensing with multiple Rayleigh laser guide stars and dynamic refocus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1809775