Data Reduction

The AAO supported 2dfdr software package handles basic reduction of KOALA data. 2dfdr takes raw files from the telescope and extracts wavelength calibrated spectra for each lenslet of the integral-field unit. For KOALA data, 2dfdr is currently able to apply some fibre chromatic and total response correction, detector response correction (flatfielding) and sky subtraction using blank sky regions within an individual observation. Depending on a particular program's science goals, additional processing may be required on the part of the astronomer. Such additional steps might include: spectrophotometric flux calibration, combining of dithered and/or mosaiced observations of a single source, and spatial rebinning of the data onto a square spatial grid (i.e. cubing). 

A description of the data reduction process is included in the KOALA+AAOmega Manual under "Part IV: Data Reduction." Additional help with data reduction is available from your support astronomer (for visitor mode programs) or the instrument scientist (for service mode programs).