The Danish 1.54-m Telescope Optical Characteristics
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DFOSC: Optical Characteristics

General Characteristics

Nominal Values on the Danish 1.54-m

The image quality is well matched to the current capabilities of the Danish telescope, and FWHM down to 0.8" have been reported. The distortion is reported to be 0.5% in the corners of the field, i.e. 9' from the field centre.

Please note that: (1) DFOSC uses 60mm circular filters, such filters will not vignet the field; and (2) the FASU requires 90mm circular filters for an unvignetted field. The use of 60mm filters in the FASU will lead to a circular field with a diameter of around 1600 pixels.

Send comments to <ls-220@eso.org> Last modified: July 17, 2002