Coronagraph; Direct imaging; Exoplanet; Integral field spectrograph; Wavefront estimation; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering
Abstract :
[en] Future space-based observatories such as WFIRST will be equipped with high contrast imaging instruments designed to study extrasolar planets and disks in the absence of atmospheric perturbations. One of the most efficient techniques to achieve this goal is the combination of wavefront control and broadband coronagraphy. Being able to achieve a high contrast over a wide spectral bandwidth allows us to characterize the chemical composition of exoplanet atmospheres using an integral field spectrograph (IFS). In this paper, we report on the development of such an IFS for the High Contrast Imaging Lab (HCIL) at Princeton University, downstream of a Shaped Pupil coronagraph. Our final lensletbased design calls for the light in an 18% band around 660 nm to be dispersed with a spectral resolution of 50. We also present our new laboratory control software written in Python, allowing the import of open-source packages such as CRISPY to ultimately reconstruct 3D datacubes from IFS spatio-spectral science images. Finally, we show and discuss our preliminary first light results, reaching a contrast of ~10-5 using in-house focal-plane wavefront control and estimation algorithms with two deformable mirrors.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Delacroix, Christian ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Planetary & Stellar systems Imaging Laboratory ; Princeton University, Mechanical and Aerospace Engineering, Princeton, United States
Sun, He; Princeton University, Mechanical and Aerospace Engineering, Princeton, United States
Galvin, Michael; Princeton University, Mechanical and Aerospace Engineering, Princeton, United States
Limbach, Mary Anne; Exoplanet Consulting, United States
Groff, Tyler; NASA Goddard Space Flight Center, Greenbelt, United States
Rizzo, Maxime; NASA Goddard Space Flight Center, Greenbelt, United States
Grossman, Matthew; Princeton University, Mechanical and Aerospace Engineering, Princeton, United States
Mumm, Katherine; Princeton University, Mechanical and Aerospace Engineering, Princeton, United States
Kasdin, N. Jeremy; Princeton University, Mechanical and Aerospace Engineering, Princeton, United States
Language :
English
Title :
First light of the High Contrast Integral Field Spectrograph (HCIFS)
Publication date :
2018
Event name :
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Event place :
Austin, Usa
Event date :
10-06-2018 => 15-06-2018
Main work title :
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Editor :
Geyl, Roland
Publisher :
SPIE
ISBN/EAN :
978-1-5106-1965-4
Peer reviewed :
Editorial reviewed
Funders :
NASA - National Aeronautics and Space Administration [US-DC]
Funding number :
NASA Grant No. 80NSSC17K096(G7SFC)
Funding text :
4D Technology; Andor Technology, Ltd.; Astronomical Consultants and Equipment, Inc.; Giant Magellan Telescope ; The Society of Photo-Optical Instrumentation Engineers (SPIE)
B. Macintosh, J. R. Graham, P. Ingraham, et al., "First light of the Gemini Planet Imager, " Proc Natl Acad Sci U S A 111(35), 12661-12666 (2014).
M. C. Noecker, F. Zhao, R. Demers, et al., "Coronagraph instrument for wfirst-afta, " JATIS 2(1), 011001 (2016).
M. W. McElwain, A. M. Mandell, Q. Gong, et al., "PISCES: An integral field spectrograph technology demonstration for the WFIRST coronagraph, " Proc. SPIE 99041A, 99041A18 (2016).
H. Sun, N. J. Kasdin, R. Vanderbei, et al., "Improved high-contrast wavefront controllers for exoplanet coronagraphic imaging systems, " Proc. SPIE 10400, 104000R (2017).
H. Sun, N. J. Kasdin, R. Vanderbei, "Identification of the focal plane wavefront control system using E-M algorithm, " Proc. SPIE 10400, 1040028 (2017).
N. J. Kasdin et al., "Extrasolar planet finding via optimal apodized-pupil and shaped-pupil coronagraphs, " Astrophys. J. 582(1), 1147-1161 (2003).
N. J. Kasdin, R. Vanderbei, M. Littman, et al., "The shaped pupil coronagraph for planet finding coronagraphy: optimization, sensitivity, and laboratory testing, " Proc. SPIE 5487, 1312 (2004).
R. Belikov et al., "Demonstration of high contrast in 10% broadband light with the shaped pupil coronagraph, " Proc. SPIE 6693, 66930Y (2007).
L. Pueyo et al., "Optimal dark hole generation via two deformable mirrors with stroke minimization, " Appl. Opt. 48(32), 6296-6312 (2009).
R. Belikov et al., "Laboratory demonstration of high-contrast imaging at inner working angles 2 λ/D and better, " Proc. SPIE 8151, 815102 (2011).
T. D. Groff et al., "Broadband focal plane wavefront control of ampli- tude and phase aberrations, " Proc. SPIE, 8442, 84420C (2012).
T. D. Groff and N. J. Kasdin, "Kalman filtering techniques for focal plane electric field estimation, " JOSA A 30(1), 128-139 (2013).
A. Riggs et al., "Demonstration of symmetric dark holes using two deformable mirrors at the high-contrast imaging testbed, " Proc. SPIE 8864, 88640T (2013).
A. Riggs, N. J. Kasdin, and T. D. Groff, "Recursive starlight and bias estimation for high-contrast imaging with an extended Kalman filter, " JATIS 2(1), 011017 (2016).
T. D. Groff, A. E. Riggs, B. Kern, and N. J. Kasdin, "Methods and limitations of focal plane sensing, estimation, and control in high-contrast imaging, " JATIS 2(1), 011009 (2016).
M. J. Rizzo, T. D. Groff, N. T. Zimmerman, et al., "Simulating the WFIRST coronagraph Integral Field Spectrograph, " Proc. SPIE 10400, 104000B (2017).
