I've done some work for TASS which I describe below. My programs for reading the FITS data files includes mkivcols.c, which simply reads the FITS header for the column and row values and reads a selected column of data. Another program, mkivrows.c, reads a selected row of data. These programs also provide statistical analysis and output, including the removal of 3-sigma outliers from the average. With simple changes to the source code, any kind of FITS iamge data can be processed.
Typical results are in files such as colsrep.txt for image column data.
The programs I mentioned above will also be found with that Tech Note, primarily to document my methods. In this Note I provide background, data and some results on these issues. More needed to be done in a quantative way to represent the effects of coma, so that our astrometric and photometric software can adapt to the optical features of the Mark IV camera. I released these studies in 1999 to TASS members. Also, some boundary values for and measurement methods for saturation were noted in this report.