chimgtyp - Changes data type (BITPIX) of an image array
     f2dhisto - Make a 2-D histogram from 2 columns in a table
       fadapt - Convolve a FITS image with an adaptive top hat filter
       farith - Perform arithmetic on 2 FITS images
      fboxcar - Convolve a FITS image with a rectangular boxcar filter
      fcarith - Perform arithmetic on FITS image with a constant
   fexpoadapt - Adaptively smooth an image and an exposure map together.
       fgauss - Convolve a FITS image with an elliptical Gaussian function
      fim2lst - Convert a 2D image to a pixel list (inverse of f2dhisto)
     fimg2tab - Copies the image pixel  values  into  a  (binary/ascii)
                table extension.
    fimconcat - Take 2 images and place them side by side as single image
      fimgbin - Rebin a FITS image using a rectangular bin size
      fimgdmp - Dump contents of a FITS image to an ASCII file
      fimgzip - Compress an image into a variable-length column. 
  fimgextract - Extract a (vector) column from a table or a subset
                from an array, optionally summing over the rows
    fimgmerge - Merge any number of images onto a given image
     fimgstat - Compute statistics (max, min, etc.) for an image file
      fimgpar - Copy the value of a FITS image pixel to the parameter file
     fimgtrim - Reset image pixels with values above/below threshold values
    fimgunzip - Restore the compressed images produced by fimgzip
     fimhisto - Creates a histogram of the image extension
     florentz - Convolve a FITS image with an elliptical Lorentzian function
      flst2im - Create an output FITS image file from input list file
                containing a list of the coordinates and respective values
    fmaskfilt - Filter an event list based on an input mask image
      fmedian - Convolve a FITS image  with a median value within  an
                user defined rectangular box
      fmrgmsk - Merge 2 or more spatial masks
      fparimg - Write a task parameter value to a FITS image pixel
      fregcon - SAOimage region file converter from one instrument/detector
                to another
        fsaoi - Translate an SAOImage region file to an input file for fselect
     fvec2img - Create an image from a column of vectors