The James Webb Space Telescope (JWST) requires testing of the full optical system in a cryogenic vacuum environment before launch. Challenges with the telescope architecture and the test environment lead to placing removable optical test

2014年6月29日 · The James Webb Space Telescope (JWST) Optical Simulation Testbed (JOST) is a tabletop experiment designed to reproduce the main aspects of wavefront sensing and control (WFSC) for JWST. To replicate the key optical physics of JWST's three-mirror anastigmat (TMA) design at optical wavelengths we have developed a three-lens anastigmat optical system.

The James Webb Space Telescope (JWST) is NASA’s flagship mission successor to the highly successful Hubble Space Telescope. It is an infrared observatory featuring a cryogenic 6.6 m aperture, deployable Optical Telescope Element (OTE) with a payload of four science instruments(SIs) assembledintoanIntegratedScience

NASA's Technology Readiness Level (TRL)-6 is documented for the James Webb Space Telescope (JWST) Wavefront Sensing and Control (WFSC) subsystem. The WFSC subsystem is needed to align the Optical Telescope Element (OTE) after all deployments have occurred, and achieves that requirement through a robust commissioning

The Fine Guidance Sensor (FGS) is part of the instrument module for the James Webb Space Telescope (JWST). The FGS operates at 37 K and provides feedback to correct motion blur caused by relative motion within the observatory - an issue during long exposures. It also provides a tunable camera for science observations.

The James Webb Space Telescope (JWST) project is an international collaboration led by NASA’s Goddard Space Flight Center (GSFC) in Greenbelt, MD. The Webb Telescope is NASA’s flagship observatory that will operate nearly a million miles away from Earth at the second Lagrange point. Webb’s optical design is a three-mirror

The James Webb Space Telescope (JWST) requires testing of the full optical system in a cryogenic vacuum environment before launch. Challenges with the telescope architecture and the test environment lead to placing removable optical test sources at the Cassegrain intermediate focus of the Telescope.

2004年10月22日 · A systematic design method for three-mirror anastigmatic (TMA) telescopes with curved image surface is proposed in this paper. The initial structure parameters are solved analytically by the paraxial… An image-based wavefront sensing and control algorithm for the James Webb Space Telescope (JWST) is presented.

space-borne observatory, the JWST, is a representative field-biased TMA telescope. A good alignment state is the precondition of the telescope with excellent observation performance.

JWST developed overlapping tools to measure & control conic constant, radius of curvature, prescription alignment and surface figure error throughout the fabrication process. During rough grinding, used a Leitz Coordinate Measuring Machine …