Introduction

This guide is not meant to be a complete cgs4 data reduction manual. It outlines the steps a typical UKIRT/CGS4 observer will want to carry out on their data after the observing run. These steps could be carried out using many different data reduction packages, for example starlink or IRAF.

I will assume that you have a nightlog file from the orac-dr pipeline, and that you have the _wce files for each science frame, which will consitute the starting point for this guide. I will also assume that the _wce files you have have been processed satisfactoraly by the pipeline, and have been flat-fielded. This will usually be the case.