High accuracy image centroiding with a moving Ronchi ruling

Details High accuracy image centroiding with a moving Ronchi ruling High accuracy image centroiding with a moving Ronchi ruling

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991opten..30..598l&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 30, May 1991, p. 598-608. NASA-supported research.

Physics

Optics

2

Astrometry, Centroids, Focal Plane Devices, Stellar Motions, Field Of View, Gratings (Spectra), Sine Waves, Space Observations (From Earth)

Scientific paper

A moving Ronchi ruling at the focal plane of a telescope has been employed to measure the relative motions of stars with great accuracy. The method has long-term stability and exceptional linearity over a relatively large field-of-view. This measurement technique may prove useful in other applications where such capabilities are required. This paper employs Fourier optics to describe the operation of the device, explore performance at very long and very short periods, and consider ruling profiles and other means of optimizing performance.

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