IRAF

The image reduction and analysis facility (IRAF) is a powerful tool for the reduction of images. This package is available on the VAX and UNIX machines in the astronomy cluster. Images start as FITS images and are converted to a format that IRAF can read. The images can then be calibrated and reduced. IRAF can make photometric measurements as well. This package is a major part of data reduction at Mt. Stony Brook. The details of IRAF's procedures are too lengthy to describe here. Figure 5 contains a flowchart to show the usual reduction procedure. There are many more tasks that can be completed by IRAF, and the manuals available in the department should be consulted.