CCD Detectors

The description of CCD reductions is divided into four parts. Section describes the ideas behind the relative calibration of 2--dimensional photometric CCD--images.

Section gives a description of the steps required to perform a relative calibration of the CCD and discusses the various MIDAS commands that are available to perform the required operations. Section provides some examples of typical reduction scenarios. Section is a summary of the relevant commands.

The procedures described in the manual will yield CCD--frames whose pixel values represent relative flux from one to the other. In order to proceed to calibrate the images in terms of magnitudes requires further steps not detailed here.

• Introduction
• Discussion
• Reduction Steps
• Removing Irrelevant Columns
• Bias Corrections
• Averaging and Merging Frames
• Cleaning Images
• Using the COMPUTE Command
• Examples and Hints
  • The Simplest Case
  • A Case with some Bad Columns
• CCD-Commands Summary