This is the way all calibration data are reduced by QC Garching, as are all science data from Service Mode programmes. QC Garching creates master calibration data for each night with raw calibration data, both Visitor Mode and Service Mode . These data are stored in the ESO Archive and are publicly accessible. For SM programmes, QC Garching runs the pipeline on all science raw data, using the best available master calibration data. In 4port readout mode, the ports are designated as shown here.
All product fits files have the prescan and overscan regions chopped off.
For imaging projects, photometric standards are observed on every clear night through the filters being used that night. Clear nights are defined as nights when no clouds are visible. However, ESO can not certify these nights as photometric. Pipeline-processed zeropoints are part of the QC1 process. Find zeropoints here .