**Table 1:** Optical magnitudes and radio flux densities of target sources at two frequencies.
						Total		Total
Source	RA	Dec	ID	m_R	z	flux at	log $P_{1.4~{\rm GHz}}$	flux at	$\alpha_{1.4~{\rm GHz}}^{4.85~{\rm GHz}}$	LAS	LLS
name	h m s	$\hbox{$^\circ$ }$ $\hbox{$^\prime$ }$ $\hbox{$^{\prime\prime}$ }$				1.4 GHz		4.85 GHz
						[mJy]	[W Hz^-1]	[mJy]		[mas]	[ $h^{-1}~{\rm pc}]~~~$
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)
0809+404	08 12 53.131	40 19 00.09	Q	19.50	0.551	1068	26.63	392	-0.81	14.87	54.9
0949+287	09 52 06.090	28 28 32.35	G	20.15	-	1364	27.38 $\ast$	529	-0.76	308.79	1330.0 $\ast$
1159+395	12 01 49.982	39 19 11.26	G	23.32	2.370	599	27.78	249	-0.71	41.08	161.3
1315+396	13 17 18.653	39 25 28.02	Q	18.20	1.560	615	27.39	227	-0.80	33.77	143.8
1502+291	15 04 26.715	28 54 30.55	q	18.58	0.056?	567	24.29?	261	-0.63	41.60	30.8?
1616+366	16 18 23.546	36 32 01.33	G	19.35	0.734	536	26.60	268	-0.56	$\sim$ 60.00	242.0

Column (1): source name in the IAU format; Col. (2): source right ascension (J2000) extracted from FIRST; Col. (3): source declination (J2000) extracted from FIRST; Col. (4): optical identification: G - galaxy, Q - quasar, q - star-like object without known redshift; Col. (5): red magnitude extracted from SDSS/DR4; Col. (6): redshift; Col. (7): total flux density at 1.4 GHz extracted from FIRST; Col. (8): Log of radio luminosity at 1.4 GHz in W Hz^-1; Col. (9): total flux density at 4.85 GHz extracted from GB6; Col. (10): spectral index between 1.4 and 4.85 GHz calculated using flux densities in Cols. (7) and (9); Col. (11): largest Angular Size (LAS) in milliarcseconds measured in the 1.65-GHz VLBA image - in most cases, as a separation between the outermost component peaks; in one case (denoted with " $\sim$ '') measured in the image contour plot; Col. (12): largest Linear Size (LLS) in h^-1 pc. Values denoted with " $\ast$ '' were computed assuming median redshift z=1.085. Redshift quoted for 1502+291 is the redshift of Abell 2022 cluster.

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