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Reduction of Schmidt Photographs with the Aid of Reference Marks on the Curved Plate
Published online by Cambridge University Press: 14 August 2015
Abstract
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A method is proposed for improving the astrometric accuracy obtainable from curved-field Schmidt plates. A reseau of small crosses in a 10 mm-spaced rectangular grid is imposed on the plate while still curved in its holder. The reseau is calibrated by photography of a field of reference stars with known positions. The method eliminates the troublesome errors arising from uncertainty in the nature of deformation of the curved plates.
- Type
- Session D: Astrometry with Large Telescopes
- Information
- Copyright
- Copyright © Reidel 1974
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