| | 38 | || '''22.03.2019[[BR]](10hrs, HdA Auditorium)''' || '''Noah Schwartz (ATC Edinburgh)''' || '''Adaptive Optics for HARMONI: a diffraction-limited ELT[[BR]]'''[[BR]]HARMONI is a visible and near-infrared integral field spectrograph, providing the ELT’s core spectroscopic capability, starting at First Light. To get the full sensitivity and spatial resolution gain, HARMONI will work at diffraction limited scales. This will be possible due to two adaptive optics (AO) systems, complementary to each other. The first one is a simple but efficient Single Conjugate AO system (good performance, low sky coverage), fully integrated in HARMONI itself. The second one is a Laser Tomographic AO system, providing a very high sky-coverage to the instrument. Both AO modes for HARMONI have gone through the Preliminary Design Review at the end of 2017, and will enter in Final Design phase from early 2018 to early 2020.[[BR]][[BR]] In this talk, Noah Schwartz will provide an overview of HARMONI and on the on-going developments in the AO systems. He will focus on the single conjugate mode (SCAO) and in particular the SCAO wavefront sensing using a Pyramid. He will also detail a set of key items that have been addressed during the PDR, especially the “Island Effect” produced by the ELT's segmented pupil, and how the instrument team plans to tackle it.[[BR]][[BR]]Presentation: English[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2019S1/2019-03-22_HARMONI_AO.pdf Slides: English][[BR]]Questions: German, English || |
