Physics
Scientific paper
Mar 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..206..189m&link_type=abstract
Solar Physics, v. 206, Issue 1, p. 189-207 (2002).
Physics
2
Scientific paper
Active or adaptive optics often require the ability to characterize wavefront aberrations using natural extended sources. The task becomes especially challenging when dealing with widely extended sources such as the solar granulation. We propose a new approach based on the processing of oppositely defocused images. This method, which is a generalization of a technique known as curvature sensing, derives the wavefront curvature from the difference between two oppositely defocused images and determines the second momenta of the point spread function. The proposed method measures the wavefront aberration from the images themselves, requires little computational resources, is fast enough to be used in a real-time adaptive optics system and is particularly adapted to random patterns such as solar granulation or spot penumbras whose morphology evolves during the observation. We envision the application of the method to real-time seeing compensation in solar astronomical telescopes, and to the correction of optical system aberrations in remote sensing instrumentation. This effort is directed towards building a curvature sensor for the real-time applications.
Kupke Renate
Mickey Donald L.
Molodij Guillaume
Roddier Francois
No associations
LandOfFree
Curvature Wavefront Sensor For Solar 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 Curvature Wavefront Sensor For Solar Adaptive Optics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Curvature Wavefront Sensor For Solar Adaptive Optics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1498572