The LINC-NIRVANA Data Reduction Software (LN DRS) implements a data reduction and image reconstruction pipeline (see figure 1). The software provides all steps necessary to reconstruct high-resolution images from several LINC-NIRVANA raw images. The flowchart in figure 1 represents the data flow (from top to bottom).
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Two different elements are shown in the flowchart. The blue rectangles represent data reduction and reconstruction steps; the other rectangles represent files with specific content. The processing steps are executed in the following order:
The LN DRS uses the files with the following content:
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An astronomer collects raw data images and calibration data (sky, flatfield and bad pixel map) from an observation and can use the graphical user interface to inspect these data and parameterize the pipeline. By executing the pipeline, controlled by these parameters, a high resolution image will be reconstructed.
The software of the LINC-NIRVANA Data Reduction System (LN DRS) uses the IDL programming language and consists of several components:
Please download at least the first two packages from the web page at http://www.mpifr-bonn.mpg.de/lndrs/index.html and store them in a proper directory (e.g. ~/lndrs).
After downloading all packages into a directory (e.g. ~/lndrs), please go into this directory and follow these steps: