See Table 16: Required PRF Accuracy for Four Strong Source Strengths

Table 16: Required PRF Accuracy for Four Strong Source Strengths
Angular Separation Radius, arcsec	PRF Accuracy, 1
	1 Crab		0.1 Crab		0.01 Crab		0. 001 Crab
	Fraction of PRF Peak	% of measured point response value	Fraction of PRF Peak	% of measured point response value	Fraction of PRF Peak	% of measured point response value	Fraction of PRF Peak	% of measured point response value
1.6	1e-3	0.7	7e-4	0.5	1.5e-3	1	1.5e-3	1
4.5	1.5e-5	0.5	7e-5	3	7e-5	3	3e-4	> 100
10	4e-6	0.9	5e-6	2.3	3e-5	14	3e-4	> 100
45	5e-7	1.4	3e-6	14	3e-5	> 100	3e-4	> 100
135	3e-7	7	3e-6	> 100	3e-5	> 100	3e-4	> 100