تقرير
SLM-based Active Focal-Plane Coronagraphy: Status and future on-sky prospects
| العنوان: | SLM-based Active Focal-Plane Coronagraphy: Status and future on-sky prospects |
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| المؤلفون: | Kühn, Jonas G., Jolissaint, Laurent, Bouxin, Audrey, Patapis, Polychronis |
| المصدر: | Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114511S (2 February 2021) |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors |
| الوصف: | We recently started to investigate how liquid-crystal on silicon (LCOS) spatial light modulator (SLM) would perform as programmable focal-plane phase mask (FPM) coronagraphs. Such "adaptive coronagraphs" could potentially help adapt to observing conditions, but also tackle specific science cases (e.g. binary stars). Active FPMs may play a role in the context of segmented telescope pupils, or to implement synchronous coherent differential imaging (CDI). We present a status update on this work, notably early broadband contrast performance results using our new Swiss Wideband Active Testbed for High-contrast imaging (SWATCHi) facility. Finally, we unveil the upcoming near-infrared PLACID instrument, the Programmable Liquid-crystal Adaptive Coronagraphic Imager for the 4-m DAG observatory in Turkey, with a first light planned for the end of the year 2022. Comment: 9 pages, 4 figures, Proceedings of SPIE "Astronomical Telescopes and Instrumentation" 2020 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1117/12.2562579 |
| URL الوصول: | http://arxiv.org/abs/2102.03201 |
| رقم الأكسشن: | edsarx.2102.03201 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1117/12.2562579 |
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