What are adaptive optics systems used in astronomy and how is the principal axis used in their control?

Feb 22, 2023 ... We introduce a graph construction scheme that constructs the adjacency matrix A using unsupervised and supervised information. the distribution, along with the variance along each principal axis. The principal axes and variances describe the orientation and size of the "error ... Sep 27, 2012 ... SUMMARY The principal axis angle ξ0, or Kagan angle, is a measure of the difference between the orientations of two seismic moment tensors. principal axis · noun · Browse Nearby Words · Cite this Entry · Share · More from Merriam-Webster · Popular in Grammar & Usage · Popular in Wordplay · Popular. large values on this axis), whereas the second principal axis reflected pH and phosphate concentrations (sites with high pH and high PO4 concentrations had ... Feb 28, 2018 ... One way to say it: you do not need to apply any external torque to keep an object rotating about a principal axis. Apr 21, 2025 ... I want to calculate the principle axis of the second monument of area of polygons and was wondering if there were any existing ... factor.pa: Principal Axis Factor Analysis. Description. Among the many ways to do factor analysis, one of the most conventional is principal axes. An eigen ... Fold principal axis—a new tool for defining the orientations of rotationally symmetric shapes. Computing methodologies · Artificial intelligence · Computer ... (6,7). This paper describes work on an analytic approach, the principal axis transformation, which is appealing because of its computational.