TPF coronagraph instrument design
Explore the source record for details and available documents.
coronagraph↗
Engineering topics
Green, J. J.
Publications and source records attributed to Green, J. J..
Simulations of scattered light control algorithms for coronagraphic high contrast imaging
Explore the source record for details and available documents.
coronagraph TPF Terrestrial Planet Finder↗
Modeling approach the Terrestrial Planet Finder coronagraph mission
Explore the source record for details and available documents.
TPF Terrestrial Planet Finder coronagraph↗
Wavefront sensing and control for large space optics
Large space optical systems will require on-orbit wavefront sensing and control systems to correct misalignments and figure errors incurred during manufacture, launch and deployment.
NGST wavefront sensing wavefront control segmented↗
Interferometric validation of image based wavefront sensing for NGST
In this paper, we present the experimental validation of a focus-diverse wavefront sensing algorithm with comparative interferometric measurments of a perturbed test mirror.
NGST phase retrieval focus diversity wavefront sen↗
Wavefront sensing and control software for a segmented space telescope
This paper describes the engineering version of the STCS, the algorithms it incorporates, and methods of communicating with the testbed hardware.
wavefront↗
Phase retrieval camera for testing NGST optics
The NGST Phase Retrieval Camera (PRC) is a portable wavefront sensor useful for optical testing in high-vibration environments. Primary applications of the PRC are testing and experimenting with NGST technology demonstrator mirrors, along with exploring other wavefront sensing and control problems not easily studied using WCT. An overview of the hardware and testing results will be presented.
NGST↗
NGST phase retrieval camera design and calibration details
This presentation will detail the packaging and hardware chosen for the PRC, the PRC software, and calibration of the instrument.
wavefront↗
Extreme wave front sensing accuracy for the Eclipse Coronagraphic Space Telescope
Through both simulation and hardware experiments, we examine and establish the key data requirements, such as the defocus levels and imagin signal-to noise level, that are necessary to obtain the desired wave front sensing accuracy and bandwidth.
coronagraphic↗
PSF monitoring and in-focus wavefront control for NGST
This paper presents the results of our experiments and simulations on the NGST Wavefront Control Testbed (WCT) to demonstrate PCF Monitoring and in-focus wavefront control.
wavefront↗