Calibration Access and Data Handbook

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The routine returns the platescale of the specified filter. The platescale is stored as keyword PLTSCALE in the the distortion map extension associated with a filter. The extension name is FILTER-FilterId (e.g. FILTER-U, FILTER-V, FILTER-GRISM1 etc.) The units of the platescale value are arcsec/pixel. The platescale defines the size of the pixel (1025,1025), which is the central OM pixel.

Michael Smith 2011-09-20