IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph (Conference Presentation)

Gutt, Gary; Saini, Navtej; Nemati, B.; Anderson, Kevin R.; Chang, Zenghu; Shaklan, Stuart

doi:10.1117/12.2274260

Cited by 5 publications

(5 citation statements)

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“…JPL is also responsible for defining the CGI OS, including schedules of spacecraft slews and rolls and operations of electronics and mechanisms. Upon receiving the fully integrated model, JPL runs it through its STOP modeling pipeline, IMPipeline 92 . In parallel, GSFC generates the OS-appropriate reaction wheel speeds, from which JPL computes post-FSM pointing jitter.…”

Section: Stability and Structural Thermal And Optical Performance Mod...mentioning

confidence: 99%

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End-to-end numerical modeling of the Roman Space Telescope coronagraph

Krist,

Steeves,

Dube

et al. 2023

J. Astron. Telesc. Instrum. Syst.

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The Roman Space Telescope will have the first advanced coronagraph in space, with deformable mirrors (DMs) for wavefront control (WFC), low-order wavefront sensing and maintenance, and a photon-counting detector. It is expected to be able to detect and characterize mature, giant exoplanets in reflected visible light. Over the past decade, the performance of the coronagraph in its flight environment has been simulated with increasingly detailed diffraction and structural/thermal finite-element modeling. With the instrument now being integrated in preparation for launch within the next few years, the present state of the end-to-end modeling, including the measured flight components such as DMs, is described. The coronagraphic modes, including characteristics most readily derived from modeling, are thoroughly described. The methods for diffraction propagation, WFC, and structural and thermal finite-element modeling are detailed. The techniques and procedures developed for the instrument will serve as a foundation for future coronagraphic missions, such as the Habitable Worlds Observatory.

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Section: Stability and Structural Thermal And Optical Performance Mod...mentioning

confidence: 99%

“…Upon receiving the fully integrated model, JPL runs it through its STOP modeling pipeline, IMPipeline. 92 In parallel, GSFC generates the OS-appropriate reaction wheel speeds, from which JPL computes post-FSM pointing jitter.…”

Section: Stop Modelingmentioning

confidence: 99%

End-to-end numerical modeling of the Roman Space Telescope coronagraph

Krist,

Steeves,

Dube

et al. 2023

J. Astron. Telesc. Instrum. Syst.

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“…Integrated Structural-Thermal-Optical-Performance (STOP) analysis is becoming the standard for both large 119,120 and small space-telescopes. 121 These models unfortunately are often time-consuming to build and run, leading to the dilemma of whether to design the active optics system before or after the observatory design is complete and STOP modeling of input disturbances is complete.…”

Section: Parameterized Disturbancesmentioning

confidence: 99%

Approaches to lowering the cost of large space telescopes

Douglas,

Aldering,

Allan

et al. 2023

Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV

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New development approaches, including launch vehicles and advances in sensors, computing, and software, have lowered the cost of entry into space, and have enabled a revolution in low-cost, high-risk Small Satellite (SmallSat) missions. To bring about a similar transformation in larger space telescopes, it is necessary to reconsider the full paradigm of space observatories. Here we will review the history of space telescope development and cost drivers, and describe an example conceptual design for a low cost 6.5 m optical telescope to enable new science when operated in space at room temperature. It uses a monolithic primary mirror of borosilicate glass, drawing on lessons and tools from decades of experience with ground-based observatories and instruments, as well as flagship space missions. It takes advantage, as do large launch vehicles, of increased computing power and space-worthy commercial electronics in low-cost active predictive control systems to maintain stability. We will describe an approach that incorporates science and trade study results that address driving requirements such as integration and testing costs, reliability, spacecraft jitter, and wavefront stability in this new risk-tolerant "LargeSat" context.

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“…30,31 The scenarios include speckle time series, derived from wavefront maps produced using Structural-Thermal-Optical-Performance (STOP) modeling of the Roman observatory. 32 The OS model outputs include noisy and noiseless datacubes of coronagraphic intensity images versus time, with injected planets and realistic observing scenarios that include reference stars, and off-axis point spread function (PSF)s for injecting additional targets. These scenario files are available to the public from IPAC.…”

Section: Observing Scenariosmentioning

confidence: 99%

A review of simulation and performance modeling for the Roman coronagraph instrument

Douglas,

Ashcraft,

Belikov

et al. 2020

Preprint

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The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) will be capable of characterizing exoplanets in reflected light and will demonstrate space technologies essential for future missions to take spectra of Earthlike exoplanets. As the mission and instrument move into the final stages of design, simulation tools spanning from depth of search calculators to detailed diffraction models have been created by a variety of teams. We summarize these efforts, with a particular focus on publicly available datasets and software tools. These include speckle and point-spread-function models, signal-to-noise calculators, and science product simulations (e.g. predicted observations of debris disks and exoplanet spectra). This review is intended to serve as a reference to facilitate engagement with the technical and science capabilities of the CGI instrument.

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IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph (Conference Presentation)

Cited by 5 publications

References 0 publications

End-to-end numerical modeling of the Roman Space Telescope coronagraph

End-to-end numerical modeling of the Roman Space Telescope coronagraph

Approaches to lowering the cost of large space telescopes

A review of simulation and performance modeling for the Roman coronagraph instrument

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