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Input Data

The information involved in a reduction session consists of user data and system tables. User data is a set of echelle images observed with the same instrument configuration, corresponding to a wavelength calibration image (WLC), a flat field image (FLAT) and astronomical objects. Optionally, this set will include the standard stars (STD) to be used in the absolute or relative flux calibration, and dark images (DARK).



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1999-06-15