PHASE-DIVERSITY EXPERIMENTAL RESULTS - DECONVOLUTION OF V-SCORPII

This article reports results of a set of observations aimed at a valid ation of the phase diversity technique. The data were taken at the U.S . Air Force Maul Optical Site (AMOS) atop of mount Haleakela, in Maul, Hawaii, using the 81 centimeter, Beam Director Telescope (BDT). In th is paper we present first a theoretical description of phase diversity . The phase diversity algorithm is formulated in the context of nonlin ear programming where a metric is developed and then minimized. This d evelopment will show how the Zernike coefficients can be extracted dir ectly using nonlinear optimization techniques. A detailed discussion o f the experimental implementation follows. The multiple star which was observed was HD 145502, v Scorpii. This article presents the results of using phase diversity for phase retrieval on v Scorpii. The phase d iversity technique demonstrates a great deal of robustness on this ast ronomical field data. Finally, a discussion of the results and some of the related signal to noise issues are presented.