{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T08:17:29Z","timestamp":1740125849813,"version":"3.37.3"},"reference-count":35,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2021,5,3]],"date-time":"2021-05-03T00:00:00Z","timestamp":1620000000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"DOI":"10.13039\/501100003579","name":"University of Toronto","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003579","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,6,17]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n               <jats:p>We investigate the focal plane wavefront sensing technique, known as Phase Diversity, at the scientific focal plane of a segmented mirror telescope with an adaptive optics (AO) system. We specifically consider an optical system imaging a point source in the context of (i) an artificial source within the telescope structure and (ii) from AO-corrected images of a bright star. From our simulations, we reliably disentangle segmented telescope phasing errors from non-common path aberrations (NCPA) for both a theoretical source and on-sky, AO-corrected images where we have simulated the Keck\/NIRC2 system. This quantification from on-sky images is appealing, as it is sensitive to the cumulative wavefront perturbations of the entire optical train; disentanglement of phasing errors and NCPA is therefore critical, where any potential correction to the primary mirror from an estimate must contain minimal NCPA contributions. Our estimates require a 1-min sequence of short-exposure, AO-corrected images; by exploiting a slight modification to the AO-loop, we find that 75 defocused images produce reliable estimates. We demonstrate a correction from our estimates to the primary and deformable mirror results in a wavefront error reduction of up to 67\u00a0per\u2009cent and 65\u00a0per\u2009cent for phasing errors and NCPA, respectively. If the segment phasing errors on the Keck primary are of the order of \u223c130\u00a0nm RMS, we show we can improve the H-band Strehl ratio by up to 10\u00a0per\u2009cent by using our algorithm. We conclude our technique works well to estimate NCPA alone from on-sky images, suggesting it is a promising method for any AO-system.<\/jats:p>","DOI":"10.1093\/mnras\/stab1247","type":"journal-article","created":{"date-parts":[[2021,4,29]],"date-time":"2021-04-29T19:13:42Z","timestamp":1619723622000},"page":"3347-3360","source":"Crossref","is-referenced-by-count":2,"title":["Simultaneous estimation of segmented telescope phasing errors and non-common path aberrations from adaptive-optics-corrected images"],"prefix":"10.1093","volume":"505","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2621-9655","authenticated-orcid":false,"given":"Masen P","family":"Lamb","sequence":"first","affiliation":[{"name":"Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada"}]},{"given":"Carlos","family":"Correia","sequence":"additional","affiliation":[{"name":"Space ODT, Rua A. C. Monteiro, 65, P-4050-014 Porto, Portugal"}]},{"given":"Suresh","family":"Sivanandam","sequence":"additional","affiliation":[{"name":"Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada"},{"name":"David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada"}]},{"given":"Robin","family":"Swanson","sequence":"additional","affiliation":[{"name":"Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada"},{"name":"Department of Computer Science, University of Toronto, 40 St George Street, Toronto, M5S 2E4, Canada"}]},{"given":"Polina","family":"Zavyalova","sequence":"additional","affiliation":[{"name":"David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada"},{"name":"Department of Electrical\u00a0& Computer Engineering, University of Toronto, 10 King\u2019s College Road, Toronto, M5S 3G4, Canada"}]}],"member":"286","published-online":{"date-parts":[[2021,5,3]]},"reference":[{"key":"2021070803424694000_bib1","doi-asserted-by":"publisher","first-page":"642","DOI":"10.1117\/12.2314121","volume-title":"Proc. SPIE Conf. Ser. Vol. 10703, Adaptive Optics Systems VI","author":"Bond","year":"2018"},{"key":"2021070803424694000_bib2","doi-asserted-by":"publisher","first-page":"415","DOI":"10.1117\/12.2310157","volume-title":"Proc. SPIE Conf. Ser. Vol. 10700, Ground-based and Airborne Telescopes VII","author":"Chanan","year":"2018"},{"key":"2021070803424694000_bib3","doi-asserted-by":"publisher","first-page":"188","DOI":"10.1117\/12.391510","volume-title":"Proc. SPIE Conf. Ser. 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