Commissioning the James Webb Space Telescope optical telescope element

Feinberg, Lee; Wolf, Erin; Acton, Scott T.; Knight, Scott S.; Lallo, Matt; Perrin, Marshall D.; Reynolds, Paul; Howard, Joseph M.; Jurling, Alden S.; Keski-Kuha, Ritva; Zielinski, Thomas P.

doi:10.1117/12.2628626

Cited by 7 publications

(5 citation statements)

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“…The in-orbit optical performance of the JWST telescope is significantly better than expected, with lower wavefront errors and therefore a sharper point spread function (PSF) across the entire field of view [11]. More specifically, the JWST PSF is diffraction limited already at 1.1 µm, and reaches a Strehl ratio of 0.9 at 4 µm across the entire field of view.…”

Section: Nirspec Image Quality and Impact On Slit Lossesmentioning

confidence: 96%

In-orbit commissioning of the near-infrared spectrograph on the James Webb Space Telescope

Abul-Huda

Altenburg

Oliveira

et al. 2022

Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave

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The Near-Infrared Spectrograph (NIRSpec) is one of the four focal plane instruments on the James Webb Space Telescope which was launched on Dec. 25, 2021. We present an overview of the as-run NIRSpec commissioning campaign, with particular emphasis on the sequence of activities that led to the verification of all hardware components of NIRSpec. We also discuss the mechanical, thermal, and operational performance of NIRSpec, as well as the readiness of all NIRSpec observing modes for use in the upcoming JWST science program.

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Section: Nirspec Image Quality and Impact On Slit Lossesmentioning

confidence: 96%

In-orbit commissioning of the near-infrared spectrograph on the James Webb Space Telescope

Abul-Huda

Altenburg

Oliveira

et al. 2022

Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave

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“…WFE numbers for the four filters that were unable to be tested due to limited interferometer wavelengths will be obtained via focus diverse phase retrieval, similar to how Webb and other telescopes have been aligned in orbit. 21,[41][42][43][44] The measured results discussed in the previous section will be used as sanity checks against the numbers obtained through phase retrieval.…”

Section: Flight Performance Predictionsmentioning

confidence: 99%

Science filter performance summary for the Roman Space Telescope Wide Field Instrument

Cromey,

Von Handorf,

Pedroncelli

et al. 2023

UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts XI

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The Wide Field Instrument (WFI) on NASA's Roman Space Telescope has eight filters on a large filter wheel that are key to enabling the science missions of the observatory. These filters have completed their journey from individual components to fully integrated elements in the optical element wheel assembly (EWA), and have been characterized in terms of their transmittance, wavefront impact, and other key performance characteristics. This paper will summarize their capabilities and performance, demonstrating their ability to deliver top-quality science on orbit.

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“…One way to overcome these limitations is to increase the diameter of the aperture, but this also increases the overall size of the structure, which poses a technical challenge. An example of a large space observatory is NASA's James Webb Space Telescope (JWST) [1] , the largest space telescope launched in late 2021. The JWST has a primary mirror that consists of 18 hexagonal segmented mirrors with an overall aperture of 6.5 m. The secondary mirror structure is over 8 m tall.…”

Section: Introductionmentioning

confidence: 99%

High-precision real-time displacement control for large optical system structure

Tagai

Kitamoto

Hamori

et al. 2023

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023

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This research aims to establish a smart structure technology to measure and compensate for the minute displacements in large optical structures in orbit in real time. Structure-Optics coupling mechanism by Displacement correction strut for Active control of space telescope (SODA) will be designed, fabricated, and tested to demonstrate the technology through the ground test. SODA will consist of a 70 cm ceramic mirror and a smart strut with a displacement correction mechanism. This paper describes the results of functional verification testing of the smart strut and the test plan for SODA.

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Commissioning the James Webb Space Telescope optical telescope element

Cited by 7 publications

References 0 publications

In-orbit commissioning of the near-infrared spectrograph on the James Webb Space Telescope

In-orbit commissioning of the near-infrared spectrograph on the James Webb Space Telescope

Science filter performance summary for the Roman Space Telescope Wide Field Instrument

High-precision real-time displacement control for large optical system structure

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