Kitt Peak speckle camera

Physics – Optics

Scientific paper

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21

Astronomical Photography, Binary Stars, Cameras, Photographic Measurement, Speckle Patterns, Atmospheric Scattering, Diameters, Optical Correction Procedure, Optical Filters, Photographic Processing, Photographic Recording, Prisms, Telescopes

Scientific paper

The speckle camera in regular use at Kitt Peak National Observatory since 1974 is described in detail. The design of the atmospheric dispersion compensation prisms, the use of film as a recording medium, the accuracy of double star measurements, and the next generation speckle camera are discussed. Photographs of double star speckle patterns with separations from 1.4 sec of arc to 4.7 sec of arc are shown to illustrate the quality of image formation with this camera, the effects of seeing on the patterns, and to illustrate the isoplanatic patch of the atmosphere.

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