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ANGULAR RESOLUTION

 

Table 3, generated by Tony Beasley, gives the maximum lengths rounded to the nearest km (tex2html_wrap_inline1428) for each of the VLBA's 45 internal baselines. Both the upper left and lower right portions of the table are filled to make it easier to use. A measure of the corresponding resolution (tex2html_wrap_inline1430) in milliarcseconds (mas) is
 equation149
where tex2html_wrap_inline1432 is the receiver wavelength in cm (Wrobel 1995). A uniformly weighted image made from a long u-v plane track will have a synthesized beam with a slightly narrower minor axis FWHM. For the longest VLBA baseline, tex2html_wrap_inline1430 ranges from about 20 to 0.2 mas as the wavelength runs from 90 cm to 7 mm.

 

 

SC HN NL FD LA PT KP OV BR MK
MK 8612 7503 6156 5135 4970 4796 4467 4015 4399 tex2html_wrap1360
BR 5767 3658 2300 2346 1757 1806 1914 1214 tex2html_wrap1360 4399
OV 5461 3886 2328 1508 1088 !973 !845 tex2html_wrap1360 1214 4015
KP 4840 3623 2076 !744 !652 !417 tex2html_wrap1360 !845 1914 4467
PT 4580 3227 1664 !565 !237 tex2html_wrap1360 !417 !973 1806 4796
LA 4459 3007 1433 !609 tex2html_wrap1360 !237 !652 1088 1757 4970
FD 4144 3106 1655 tex2html_wrap1360 !609 !565 !744 1508 2346 5135
NL 3645 1611 tex2html_wrap1360 1655 1433 1664 2076 2328 2300 6156
HN 2853 tex2html_wrap1360 1611 3106 3007 3227 3623 3886 3658 7503
SC tex2html_wrap1360 2853 3645 4144 4459 4580 4840 5461 5767 8612
Table 3: Maximum VLBA Baseline Lengths in km (tex2html_wrap_inline1428)


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