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Flat field images (N and S)

Example imaging flat fields for GMOS-N with the red EEV CCDs are shown below. The flats are normalized and have been displayed with a greyscale from 0.8 to 1.2. The data are from the commissioning and have been released. The g', r' and i' imaging flats are from dataset GN-CAL20010910, while the z' imaging flat is from dataset GN-CAL20010830.

In 2006, a feature appeared in GMOS-N flat fields. More details, and example images, can be found on the GMOS imaging pages.

g'-filter twilight flat field.

r'-filter twilight flat field.

i'-filter twilight flat field.

z'-filter dome flat field.





Example imaging flat fields for GMOS-S with the E2V CCDs are shown below. The flats are normalized. The data are from the commissioning. The g', r' and i' imaging flats are from dataset GS-CAL20030524, while the u' and z' imaging flat are from dataset GS-CAL20030717 and GS-CAL20030720  (data not released).

g'-filter twilight flat field.

r'-filter twilight flat field.

i'-filter twilight flat field.

z'-filter twilight  flat field.



u'-filter twilight flat field


Last update November 3, 2004; Rodrigo Carrasco