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Texter, Scott C.

Publications and source records attributed to Texter, Scott C..

3 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2010

Use of a Pathfinder Optical Telescope Element for James Webb Space Telescope Risk Mitigation

A Pathfmder of the James Webb Space Telescope (JWST) Optical Telescope Element is being developed to check out critical ground support equipment and to rehearse integration and testing procedures. This paper provides a summary of the baseline Pathfmder configuration and architecture, objectives of this effort, limitations of Pathfinder, status of its development, and future plans. Special attention is paid to risks that will be mitigated by Pathfmder.

Feinberg, Lee D.↗
NASA NTRS1993

Measuring Small Changes In Aim Of An Instrument

Optoelectronic system measures small changes in direction of line of sight of instrument. Optical point source and lens mounted on x-ray telescope in reverse configuration - as projector. Magnified relative lateral motion of point source and lens imaged on position-sensing photodetector.

Arenberg, Jonathan W.↗
NASA NTRS1993

A motion detection system for AXAF X-ray ground testing

The concept, implementation, and performance of the motion detection system (MDS) designed as a diagnostic for X-ray ground testing for AXAF are described. The purpose of the MDS is to measure the magnitude of a relative rigid body motion among the AXAF test optic, the X-ray source, and X-ray focal plane detector. The MDS consists of a point source, lens, centroid detector, transimpedance amplifier, and computer system. Measurement of the centroid position of the image of the optical point source provides a direct measure of the motions of the X-ray optical system. The outputs from the detector and filter/amplifier are digitized and processed using the calibration with a 50 Hz bandwidth to give the centroid's location on the detector. Resolution of 0.008 arcsec has been achieved by this system. Data illustrating the performance of the motion detection system are also presented.

Arenberg, Jonathan W.↗