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GMOS-S Fringing in the red

The GMOS-S CCDs have significant fringing in the red. This page shows examples of fringe frames in imaging mode in the i'-filter and the z'-filter as well as science data before and after correction for the fringing.

The fringe frames shown on this page were obtained the night of July 18-19, 2003, during the commissioning of GMOS-S, during dark time, and in photometric conditions (data not released). Recent GMOS-S 2x2 binned i'-filter and z'-filter fringe frames are available (28 Mb FITS images).


z'-filter fringe frame.	i'-filter fringe frame.

Example of science data before and after correction for the fringing. The data were obtained the night of May 24-25, 2003 during the commissioning of GMOS-S. The images are from dataset GS-2003A-SV-228.

i'-filter science frame before and after fringe subtraction.

Last update: June 15, 2005; Bryan Miller