closure

        Program to compute the closure phases from LTA database. 
        This program operates on a single polarization.



 Author
	
        Sanjay Bhatnagar (sanjay@ncra.tifr.res.in)



 in (default==>stdin)

	Name of the input LTA file



 out (default==>stdout)

	Name of the output file.  The output file contains the
	following information for a single closure triangle per line: 
      
         Closure triangle name, ant. no. 1, ant. no. 2, ant. no. 3,
         phase of the three individual baselines of the closure
         triangle, closure phase.

         All phases are in degrees.



 obj (default==> All sources)

	Regular expression to match the source(s) for which closure
	phase is computed.



 poln (default==> 130 MHz (RR) poln. channel)

	Integer value to select a polarization channel.

        -1 ==> 130 MHz channel
         1 ==> 175 MHz channel



 channel (default==> 20)

	Frequency channel number to be used for closure phase
	computation.



 badbase (default==> None)

	List of regular expressions to specify bad baselines.



 antenna (default==> All)

	List of regular expressions to select antennas.  Only those
	closure triangle which involves the chosen antennas will
	appear in the output file.