Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. The experimental setup with the light path and optical parts highlighted. Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. Defocus value versus time. Iteration 100: the defocus term is turned on (black dots). Iteration 200: the classic adaptive optics (AO) correction is turned on (blue dots). Iteration 1000: the forecasting system (FORS) algorithm starts to forecast the AO correction (red dots). Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. One period of the defocus oscillation in the three correction regimes. (a, c, and e) Defocus coefficient versus time. (b, d, and f) Histogram of the coefficients. (a and b) No correction. (c and d) AO correction only. (e and f) AO + FORS correction. Note the changes in the scales. Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. One period of the defocus oscillation in the three correction regimes. (a, c, and e) RMS values of the wavefront versus timestep. (b, d, and f) histogram of the RMS values. (a and b) No correction. (c and d) AO correction only. (e and f) AO + FORS correction. Note the changes in the scales. Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. (a) Power spectra of the defocus time-series. Input defocus (black), AO closed loop (blue) and FORS closed loop (red). (b) Gain (attenuation) obtained by the AO (blue) and by the FORS (red) corrections on the input time-series. Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. (a, c, and e): Defocus coefficient versus time when a realistic defocus time-series is introduced into the simulator. (b, d, and f): histogram of the coefficients (black line) and relative Gaussian fit (red line). (a and b): no correction. (c and d): AO correction only. (e and f): AO + FORS correction. Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. (a, c, and e): RMS values of the wavefront versus timestep when a realistic defocus time-series is introduced into the simulator. (b, d, and f): histogram of the RMS values (black line). (a and b): no correction. (c and d): AO correction only. (e and f): AO + FORS correction. Note the change in the scales. Figure Legend: From: Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting J. Astron. Telesc. Instrum. Syst. 2014;1(1): doi: /1.JATIS