The Gemini Planet Imager coronagraph testbed
The Gemini Planet Imager coronagraph testbed
复制标题
双子座行星成像仪日冕仪测试台
DOI:
10.1117/12.826700
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
J. Mey
中科院分区:
文献类型:
--
作者:
R. Soummer;A. Sivaramakrishnan;B. Oppenheimer;Robin Roberts;D. Brenner;A. Carlotti;L. Pueyo;B. Macintosh;Brian Jeffrey Bauman;L. Saddlemyer;D. Palmer;D. Erickson;C. Dorrer;K. Caputa;C. Marois;K. Wallace;E. Griffiths;J. Mey
The Gemini Planet Imager (GPI) is a new facility instrument to be commissioned at the 8-m Gemini South telescope in early 2011. It combines of several subsystems including a 1500 subaperture Extreme Adaptive Optics system, an Apodized Pupil Lyot Coronagraph, a near-infrared high-accuracy interferometric wavefront sensor, and an Integral Field Unit Spectrograph, which serves as the science instrument. GPI's main scientific goal is to detect and characterize relatively young (<2GYr), self luminous planets with planet-star brightness ratios of ≤ 10-7 in the near infrared. Here we present an overview of the coronagraph subsystem, which includes a pupil apodization, a hard-edged focal plane mask and a Lyot stop. We discuss designs optimization, masks fabrication and testing. We describe a near infrared testbed, which achieved broadband contrast (H-band) below 10-6 at separations > 5λ/D, without active wavefront control (no deformable mirror). We use Fresnel propagation modeling to analyze the testbed results.
影响因子:
64.8
作者:
Ebbesen, TW;Lezec, HJ;Wolff, PA
通讯作者:
Wolff, PA
DOI:
--
发表时间:
2008
期刊:
Proceedings of SPIE 7014
影响因子:
--
作者:
B.Sun;T.Ohtsubo;T.Suzuki;T.Yamaguchi;他;天形健;Hodapp Klaus
通讯作者:
Hodapp Klaus