File:Figure of the WFI relative to the Roman Telescope.png

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Figure of the WFI relative to the Roman Telescope

Summary

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Description
English: Figure of the WFI relative to the Roman Telescope Light enters through Roman's 2.4-meter aperture and is reflected and focused by the curved main mirror. This light is reflected and focused again by the secondary mirror. Additional optical elements tighten the light beam and remove stray light as it enters the Wide Field Instrument (WFI). Inside the WFI, the light passes through the Element Wheel Assembly. This wheel has a variety of filters that allow different wavelengths of light to pass through. Then the focused and filtered light reaches the focal plane, where it creates an image on the 18 detectors in the Focal Plane Array. These detectors use the photoelectric effect to convert photons into an electrical signal that is then then decoded into an image. WFI makes 300 megapixel images.
Date
Source https://roman-docs.stsci.edu/roman-instruments-home/wfi-imaging-mode-user-guide/introduction-to-wfi
Author NASA

Licensing

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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