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Table 2

Positions of the target and calibration sources in 1950 (FK4) coordinates.

Source name RA Dec

4C 34.47 17h21m32 ṣ 02 34°20′41″̣4
3C 286 13h28m49ṣ6577 30°45′58″̣640
1732+389 17h32m40 ṣ4875 38°59′46″̣932

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