Prototype Imaging Spectrograph for Coronagraphic Exoplanet Studies (PISCES) for WFIRST-AFTA

被引：6

作者：

Gong, Qian ^{[1
]}

McElwain, Michael ^{[1
]}

Greeley, Bradford ^{[1
]}

Grammer, Bryan ^{[2
]}

Marx, Catherine ^{[1
]}

Memarsadeghi, Nargess ^{[1
]}

Stapelfeldt, Karl ^{[1
]}

Hilton, George ^{[3
]}

Sayson, Jorge Llop ^{[4
]}

Perrin, Marshall ^{[5
]}

Demers, Richard ^{[6
]}

Tang, Hong ^{[6
]}

Kern, Brian ^{[6
]}

Ferdosi, Janan ^{[6
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Design Interface, Finksberg, MD 21048 USA

[3] Newton Engn, Hyattsville, MD 20784 USA

[4] Catholic Univ Amer, Washington, DC 20064 USA

[5] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[6] Jet Prop Lab, La Canada Flintridge, CA 91011 USA

来源：

TECHNIQUES AND INSTRUMENTATION FOR DETECTION OF EXOPLANETS VII | 2015年 / 9605卷

关键词：

Integral field spectrometer; lenslet array; coronagraph; pinhole mask;

D O I：

10.1117/12.2187122

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Prototype Imaging Spectrograph for Coronagraphic Exoplanet Studies (PISCES) is a lenslet array based integral field spectrometer (IFS) designed for high contrast imaging of extrasolar planets. PISCES will be used to advance the technology readiness of the high contrast IFS baselined on the Wide-Field InfraRed Survey Telescope/Astrophysics Focused Telescope Assets (WFIRST-AFTA) coronagraph instrument. PISCES will be integrated into the high contrast imaging testbed (HCIT) at the Jet Propulsion Laboratory (JPL) and will work with both the Hybrid Lyot Coronagraph (HLC) and the Shaped Pupil Coronagraph (SPC) configurations. We discuss why the lenslet array based IFS was selected for PISCES. We present the PISCES optical design, including the similarities and differences of lenslet based IFSs to normal spectrometers, the trade-off between a refractive design and reflective design, as well as the specific function of our pinhole mask on the back surface of the lenslet array to reduce the diffraction from the edge of the lenslets. The optical analysis, alignment plan, and mechanical design of the instrument will be discussed.

引用

页数：16

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