UVES MASTER FLAT 580nm REDL/REDU 2x2 binning


The pipeline splits red UVES raw frames into two files according to the two CCDs: one red lower file (right hand side in the raw image) and one red upper file (left hand side in the raw image).

The pipeline recipe tends to over-subtract the inter-order background when creating 2x2 master flats so that negative values are possible here.

RED UPPER CCD

RED LOWER CCD