binpairs - Bin pairs of (x,y) points in log separation
     findthresh - Estimate a CCD's sky noise from the gain and readnoise
        iralign - Align the mosaiced image produced by irmosaic
      irmatch1d - Align and intensity match image produced by irmosaic (1D)
      irmatch2d - Align and intensity match image produced by irmosaic (2D)
       irmosaic - Mosaic an ordered list of images onto a grid
         linpol - Calculate polarization frames and Stoke's parameters
	   mkms - Create multispec from 1D spectra including associated bands
       objmasks - Detect objects in images and make masks
	slitpic - Generate IRAF image of aperture slit mask
       skygroup - Group a list containing RA and Dec into spatial sublists
         skysep - Compute arc separation of two RA/Dec values