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High-Contrast Imaging Noise Models Karl Stapelfeldt (JPL), Mark Marley (Ames), Jacob Lustig-Yaeger (UW), Jason Tumlinson (STScI) Tyler D. Robinson (UCSC; Sagan Fellow)

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High-ContrastImagingNoiseModels

KarlStapelfeldt (JPL),MarkMarley(Ames),JacobLustig-Yaeger (UW),JasonTumlinson (STScI)

TylerD.Robinson(UCSC;SaganFellow)

Page 2: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

FromSeager etal.(2015)Exo-SFinalReport CourtesyG.Snyder,M.Kuchner

Page 3: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

FromSeager etal.(2015)Exo-SFinalReportCourtesyG.Snyder,M.Kuchner

Countsfrom:• planet• stellarleakage• (exo)zodiacaldust• detectornoise• telescope/instrument

thermal

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KeyDetails

• modelisfullydescribedinRobinsonetal.(2016)• arXiv:1507.00777

• IDLcode(andvariants)availableonline• e.g.,github.com/tdrobinson/coronagraph_noise

• Pythoncode(andvariants)availableonline• Github.com/jlustigy/coronagraph

• Onlinesimulators/visualizersat:• www.jt-astro.science/luvoir_simtools/coron_model.html

Page 5: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

Howdoesitwork?

Page 6: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

AStraightforwardCoronagraphNoiseModel

• stellarleakage (� C xFs)

• SolarSystemzodiacallight (� Ω xF�)

• exozodiacal light (� Nez xΩ xFs x1/r2)

• darkcurrent (� Npix xDe)

• readnoise (� Npix xRe /Δtmax )

• clock-inducedcharge(� Npix xRCIC /Δtmax )

Page 7: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

Page 8: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

Page 9: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

Page 10: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

instrument/telescope params

Page 11: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

Page 12: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

47Umac;G1Vat14pc;>0.5MJ on3.6AUorbit

Page 13: High-Contrast Imaging Noise Modelsvplapps.astro.washington.edu/vpltools/coronagraph/robinson_noise.pdf · High-Contrast Imaging Noise Models Karl Stapelfeldt(JPL), Mark Marley (Ames),

SummaryandConclusions

• efficient,realistic1-D(wavelength)modelforhigh-contrastimaging

• inplanetPSFcore,outputs:• countrates• SNRs• requisiteintegrationtimes

• IDL,Python,web-basedtoolsavailable

Thanksto:SaganFellowship,bothWFIRSTSITs,NAIVPL,UCSCOWL,andtheNExSS

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Exoplanet Direct Imaging: Coronagraph Probe Mission Study “Exo-C” Karl Stapelfeldt NASA Goddard Space Flight Center Michael Brenner Jet Propulsion Laboratory,

The Future: JWST, WFIRST, and Beyond - nexsci.caltech.edunexsci.caltech.edu/.../2018/presentations/Stapelfeldt_ExEP_Sagan18.pdf · Dr. Karl Stapelfeldt, Chief Scientist NASA Exoplanet

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Contents References - mums.ac.ir · Image Quality Spatial Resolution Contrast Resolution Noise CT Radiation Dose Artifacts 3 References 1. Euclid Seeram, Computed Tomography: Principles,

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