Correlator Configurations

Currently, you can choose between six bandwidths, 128, 64, 32, 16, 8 or 4MHz, on Frequency 1, and between three bandwidths, 128, 64, or 16MHz, on Frequency 2. Usually you would use 128MHz for continuum, and the narrower bandwidths for spectral-line observations. Select the desired bandwidth and the correlator setup by choosing a correlator configuration name from the standard set, and enter this name in the schedule. Many other configurations are possible, including those which provide pulsar binning - contact Warwick Wilson (Warwick.Wilson@csiro.au) for details.

NOTE:

• To see which correlator configurations are available for the current observing term, check the WWW documentation.
• RPFITS includes DC term, so the actual number of channels written is $n_c$ + 1. AIPS can cope with up to 2048 channels
• Switched polarisation calibration is used on all 4-product configurations ($n_p$=4)

The Table on the next page lists the most common correlator configurations, using the following parameters:

       BW :    bandwidth


		 $n_c$ :		 number of channels/product 


		 $n_p$ :		 number of products (1=XX; 2=XX,YY; 4=XX,YY,XY,YX)


		 $n_b$ :		 number of time bins 


		 		 (/home/corr/cor/pulsar/source.polyco required on CACCC)


		 $\delta$ :		 FWHM resolution in channels with no reweighting or Hanning Smoothing 


		 		   (From Killeen 1996)


Ant : 		 antennas present (*=all; -6=all excluding CA06)


AC : 		 autocorrelations

Table H.1: Compact Array correlator configurations

	Frequency 1						Frequency 2				Ant
Name	BW	$n_c$	$n_p$	$n_b$	$\delta$	option	BW	$n_c$	$n_p$	$n_b$
	MHz						MHZ
FULL_128_64_2	128	64	2		2.21		128	64	2		*
FULL_128_2	128	32	4		1.77		128	32	4		*
BIN32_128_2	128	32	4	32	1.77		128	32	4	32	*
PSR16_128_2	128	32	4	16	1.77		128	32	4	16
PSR16_128_1	128	32	4	16	1.77
PSR8_128_2	128	32	4	8	1.77		128	32	4	8	*
NO6_128_2	128	32	4		1.77		128	32	4		$-6$
FULL_128_1	128	32	4		1.77						*
FULL_64_64_POL	64	64	4								*
FULL_64_64_2_POL	64	64	4				64	64	4		*
FULL_64_64-128	64	64	2		1.24		128	32	4		*
FULL_64_64_2	64	64	2		1.24	VLBI	64	64	2		*
NO6AC_64_64_2	64	64	2		1.24	AC	64	64	2		$-6$
FULL_32_256	32	256	2		1.21						*
FULL_32_128-128	32	128	2		1.21		128	32	4		*
FULL_32_128-64	32	128	2		1.21	VLBI	64	64	2		*
FULL_32_128	32	128	2		1.21						*
FULL_32_128-16_256	32	128	2		1.21		16	256	2		*
FULL_32_32-16_32	32	32	2		1.21		16	32	2		*
FULL_16_512	16	512	2		1.21						*
FULL_16_256_POL	16	256	4		1.21						*
FULL_16_256-128	16	256	2		1.21		128	32	4		*
FULL_16_256-64	16	256	2		1.21	VLBI	64	64	2		*
FULL_16_256-16_256	16	256	2		1.21		16	256	2		*
FULL_16_32-16_32	16	32	2		1.21		16	32	2		*
FULL_8_2048	8	2048	1		1.21						*
FULL_8_1024	8	1024	2		1.21						*
NO6AC_8_1024	8	1024	2		1.21	AC					$-6$
NO6_8_1024	8	1024	2		1.21						$-6$
FULL_8_512_POL	8	512	4		1.21						*
NO6AC_8_512_POL	8	512	4		1.21	AC					$-6$
FULL_8_512-128	8	512	2		1.21		128	32	4		*
FULL_8_512-64	8	512	2		1.21	VLBI	64	64	2		*
FULL_8_512	8	512	2		1.21						*
NO6_8_512	8	512	2		1.21						$-6$
FULL_8_512-16_256	8	512	2		1.21		16	256	2		*
FULL_8_32-16_32	8	32	2		1.21		16	32	2		*
PSR32_8_256-128	8	256	2	1			128	32	4	32
FULL_4_4096	4	4096	1		1.21
FULL_4_2048	4	2048	2		1.21						*
FULL_4_1024-128	4	1024	2		1.21		128	32	4		*
FULL_4_1024_POL	4	1024	4		1.21
PSR8_4_1024-128	4	1024	2	1	1.21		128	32	4	8	*
NO6AC_4_1024-128	4	1024	2		1.21	AC	128	32	4		$-6$
FULL_4_1024	4	1024	2		1.21						*
FULL_4_1024-64	4	1024	2		1.21	VLBI	64	64	2		*
FULL_4_1024-16_256	4	1024	2				16	256	2		*
FULL_4_32-16_32	4	32	2				16	32	2		*
FULL_4_32	4	32	2		1.21