MAGNITUDE ESTIMATE

To estimate the accuracy of these magnitudes, we have proceeded as for the APS O magnitudes (see Paper I): we have compared the differences between the USNO O and photoelectric B magnitudes of 102 PG UV-excess stars vs their photoelectric U - B colours (Fig.

); we found a negligible colour equation, a rms dispersion of 0.31 mag, compared to 0.25 mag for the APS magnitudes, and a relatively large offset <O - B> = -0.38 mag (to be compared with <O - B> = -0.16 mag for the APS). Fig.

shows a comparison of the APS and USNO O magnitudes for the bright AGNs; they are in reasonable agreement, except for five objects for which the USNO magnitudes are brighter by more than one mag than the APS magnitudes; these five objects are low luminosity Seyfert 1 galaxies at relatively small redshifts (z < 0.13) which probably explain the large magnitude differences; it seems that the USNO magnitudes for extended objects are grossly underestimated.

In Table

, we list all bright (B < 17.0) AGNs found in the FBS subarea at |b| > 30 $^\circ$ with their APS and USNO O magnitudes (when available) and the absolute B magnitudes computed using the APS O magnitudes increased by 0.16 mag (or the USNO O magnitudes increased by 0.4 mag), excluding the bright QSOs of our ``complete" sample (listed in Table

**Table:** Bright AGNs (B < 17.0) in the FBS subarea at |b| > 30 $^\circ$ , excluding the bright QSOs listed in Table 3. Cols. 1 to 6 give the B1950 position, cols. 7 and 8, the APS and USNO-A2.0 O magnitudes respectively, col. 9 the name, col. 10 the redshift, col. 11 the galactic latitude, col. 12 the absolute B magnitude and col. 13 references for the newly identified AGNs: (1) Beuermann et al. (1999), (2) Cao et al. (1999), (3) Wei et al. (1999), (4) White et al. (2000), (5) Schwope et al. (2000), (6) Xu et al. (1999), (7) present paper
4c $\alpha$ (B1950)	3c $\delta$ (B1950)	APS O	US O	Name	z	b	$M_{\rm B}$	ref.
	8	6	34.3	62	12	11	16.11	15.8	HS 0806+6212	0.173	33.0	-23.8
	8	38	31.7	77	3	59	17.55	14.7	FBS 0838+771	0.131	32.7	-21.8
	8	38	46.5	40	29	16	16.35	16.6	RXS J08420+4018	0.151	37.6	-23.3	(5)
	8	44	33.9	34	56	9	16.98	14.0	FBS 0844+349	0.064	38.0	-20.7
	8	51	28.5	40	30	34	16.23	16.6	RXS J08547+4019	0.152	40.0	-23.5	(3)
	8	53	58.4	75	6	34	16.40	16.1	RXS J08595+7455	0.276	34.3	-24.6	(2)
	9	24	39.6	40	51	37	16.25	16.0	KUV 09247+4052	0.419	46.3	-25.6	(6)
	9	31	50.8	43	44	35	16.47	15.5	FBS 0931+437	0.456	47.4	-25.6
	9	35	48.7	41	41	55	16.06	15.5	FBS 0935+416	1.966	48.3	-29.7
	9	36	38.9	39	37	38	16.69	16.2	PG 0936+396	0.458	48.6	-25.4
	9	45	33.2	40	44	42	16.82	13.5	NPM1G+40.0197	0.047	50.2	-20.3	(5)
	9	47	44.8	39	40	54	16.39	15.8	FBS 0947+396	0.206	50.7	-23.9
	9	50	9.5	66	22	31	17.00	16.7	FBS 0950+664	0.172	42.4	-22.9	(7)
	9	59	9.6	68	27	48	16.01	15.6	FBS 0959+685	0.773	42.0	-27.3
	10	2	12.0	34	28	59	16.86	16.8	FIRST J1005+3414	0.162	53.8	-23.0	(4)
	10	2	37.3	43	47	17	16.39	15.8	FBS 1002+437	0.178	52.9	-23.6
	10	16	4.7	34	51	35	16.62	16.5	FIRST J1018+3436	0.109	56.6	-22.3	(4)
	10	22	53.7	68	1	29	-	16.8	RX J10265+6746	1.178	43.9	-27.4
	10	25	11.2	63	18	8	-	15.8	RXS J10286+6302	0.080	47.2	-22.2	(5)
	10	28	44.8	70	43		-	16.3	RXS J10325+7027	0.063	42.4	-21.2	(5)
	10	31	7.6	36	10	39	16.76	16.3	CSO 275	0.169	59.6	-22.6	(4)
	10	32	58.3	38	12	14	16.51	16.3	B3 1032+382	1.508	59.6	-28.5	(4)
	10	48	56.5	34	15	22	15.94	15.8	FBS 1048+343	0.167	63.4	-23.9
	10	49	22.4	61	41	18	16.62	16.4	FBS 1049+617	0.421	50.4	-25.2
	10	50	37.5	66	27	59	-	15.9	RXS J10539+6612	0.117	46.9	-23.0	(1)
	11	12	19.3	66	48	23	16.53	15.8	FBS 1112+668	0.544	47.9	-25.9
	11	12	19.8	43	6	11	17.03	16.8	PG 1112+431	0.302	64.9	-24.2
	11	17	16.8	39	44	32	15.18	15.4	CG 1410	0.086	67.4	-23.2	(5)
	11	19	27.3	42	53	36	16.80	16.4	CSO 1169	0.813	66.2	-26.9	(4)
	11	27	15.9	37	5	51	17.59	17.4	FIRST J1129+3649	0.399	70.2	-24.3	(4)

**Table:** (continues)
4c $\alpha$ (B1950)	3c $\delta$ (B1950)	APS O	US O	Name	z	b	$M_{\rm B}$	ref.
	11	27	23.0	41	32	52	16.20	15.7	KUV 11274+4133	1.530	68.1	-28.4
	11	33	57.2	39	16	41	16.11	15.7	FIRST J1136+3900	0.795	70.4	-27.5	(4)
	11	34	17.3	34	49	12	17.04	16.8	FIRST J1136+3432	0.192	72.4	-23.1	(4)
	11	37	9.3	66	4	28	16.25	15.7	FBS 1137+661	0.652	49.7	-26.6
	11	40	56.8	68	1	34	16.82	15.9	FBS 1140+680	0.796	48.1	-26.6
	11	47	46.0	67	15	28	16.69	16.2	FBS 1147+673	1.020	49.1	-27.4
	11	48	41.7	38	39	2	16.20	15.6	FIRST J1151+3822	0.336	73.1	-25.2	(4)
	11	48	53.3	38	42	33	17.34	16.8	B2 1148+38	1.304	73.1	-27.4	(4)
	11	50	16.5	33	24		16.30	16.1	FBS 1150+334	1.389	76.0	-28.6
	11	58	17.6	35	25	13	16.76	16.3	HS 1158+3525	1.700	76.6	-28.5	(4)
	12	1	51.1	43	47	38	16.23	16.0	FBS 1201+437	0.663	71.1	-26.7	(6)
	12	8	37.8	70	22	12	-	14.3	RXS J12110+7005	0.127	46.6	-24.8	(5)
	12	11	32.8	33	26	26	17.26	16.6	B2 1211+33	1.598	79.9	-27.9	(4)
	12	18	5.9	39	9	55	16.67	16.3	FIRST J1220+3853	0.376	76.6	-25.1	(4)
	12	35	12.9	69	58	13	17.96	17.1	FBS 1235+699	0.522	47.4	-24.4
	12	42	46.1	34	12	33	17.52	16.9	FBS 1242+342	0.717	83.1	-25.6
	12	48	26.6	40	7	58	16.33	16.3	PG 1248+401	1.032	77.3	-27.8
	12	55	1.7	44	45	47	16.48	16.1	FBS 1255+447	0.30	72.6	-24.7
	12	57	26.8	34	39	31	17.21	16.8	B 201	1.375	82.5	-27.6	(4)
	13	12	37.0	42	34	9	15.31	15.4	NPM1G+42.0343	0.073	74.1	-22.7	(5)
	13	24	54.6	44	50	36	18.09	16.8	FBS 1324+448	0.331	71.1	-23.3
	13	28	40.2	41	44	22	16.60	16.9	RXS J13308+4128	0.182	73.5	-23.5	(5)
	13	29	29.8	41	17	23	16.78	16.8	FBS 1329+412	1.937	73.8	-28.9
	13	38	28.6	40	51	48	16.82	17.0	RXS J13406+4036	0.161	73.1	-23.0	(5)
	13	38	52.0	41	38	22	16.50	16.4	FBS 1338+416	1.204	72.5	-28.0
	13	39	47.8	37	22	16	16.89	16.7	CSO 1010	1.106	75.4	-27.4	(4)
	13	51	46.3	64		29	14.55	14.5	FBS 1351+640	0.088	52.0	-23.9
	13	54	2.3	41	50	53	16.69	15.8	RXS J13561+4136	0.697	70.4	-26.4	(4)
	14		50.9	33	34	26	16.12	16.2	RXS J14030+3320	0.342	73.4	-25.4	(5)
	14	15	57.2	43	25	43	17.51	16.8	RXS J14179+4311	0.079	66.2	-20.7	(5)
	14	16	43.3	42	47	29	16.34	15.6	HS 1416+4247	0.421	66.5	-25.6	(4)
	14	22	57.6	42	27	36	16.42	15.9	RX J14249+422	0.316	65.7	-24.9
	14	24	29.2	39	17	10	17.91	15.6	RXS J14265+3903	0.081	66.9	-20.4	(5)
	14	29	20.9	40	5	55	16.62	15.9	CSO 464	1.217	65.7	-28.0	(4)
	14	29	52.1	34	30	2	16.84	16.5	FIRST J1431+3416	0.704	67.3	-26.3	(4)

**Table:** (end)
4c $\alpha$ (B1950)	3c $\delta$ (B1950)	APS O	US O	Name	z	b	$M_{\rm B}$	ref.
	15	21	59.0	39	24	39	16.93	16.6	HS 1521+3924	0.657	56.2	-26.0	(4)
	15	26	52.0	65	58	32	16.90	16.2	FBS 1526+659	0.345	44.4	-24.6
	15	43	15.9	35	2	6	17.18	16.4	RXS J15451+3452	0.518	52.3	-25.1	(4)
	16	11	13.3	37	24	49	15.88	13.6	MCG 06.36.003	0.070	46.7	-22.0	(5)
	16	12	59.6	37	53	34	16.87	16.6	FIRST J1614+3746	1.532	46.4	-28.2	(4)
	16	30	15.1	37	44	8	16.62	16.0	FBS 1630+377	1.478	42.9	-28.4
	16	31	19.4	39	30	42	16.48	16.7	KUV 16313+3931	1.023	42.8	-27.6	(4)
	16	39	36.8	35	56		16.54	16.3	FIRST J1641+3550	1.438	40.9	-28.4	(4)
	17	1	36.2	37	41	32	15.60	15.6	RXS J17033+3737	0.065	36.8	-22.1	(5)
	17	3	3.4	38	6	9	16.83	16.0	FIRST J1704+3802	0.063	36.6	-20.9	(4)
	17	6	17.5	69	1	29	16.04	15.8	HS 1706+6901	0.449	34.6	-26.0
	17	11	17.2	35	27	1	16.84	16.3	FIRST J1713+3253	0.083	34.5	-21.5	(4)
	17	27	18.3	38	40	46	17.19	16.7	B3 1727+386	1.386	32.0	-27.7	(4)
	17	32	26.6	40	39	50	16.20	16.1	FIRST J1734+4037	0.356	31.4	-25.4	(4)

**Table:** Bright QSOs (B < 16, and M_B < -24) in the FBS subarea at |b| > 30 $^\circ$ .The columns are the same as in Table 2 with however two additional columns; an X in col. 14 indicates that the object is a ROSAT RASS source; a Y or an N in col. 15 indicates if the object lies or not in the PG area
3c $\alpha$ (B1950)	3c $\delta$ (B1950)	APS O	US O	Name	z	b	M_B	ref.
8	4	35.4	76	11	33	14.18	14.2	FBS 0804+762	0.100	31.0	-24.5		X	Y
8	12	35.6	41	54	11	15.97	15.8	KUV 08126+4154	1.280	32.9	-28.7			Y
8	33	34.0	44	36	30	15.09	15.5	US 1329	0.249	37.0	-25.6		X	Y
9	46	49.7	39	16	5	15.97	15.4	KUV 09468+3916	0.360	50.7	-25.8		X	Y
9	53	48.1	41	29	39	15.59	15.1	PG 0953+415	0.239	51.7	-25.1		X	Y
10	7	26.1	41	47	25	15.97	15.6	FBS 1007+417	0.613	54.2	-26.7		X	Y
11		27.4	77	15	8	15.93	15.6	FBS 1100+774	0.313	38.6	-25.4		X	Y
11	2	55.0	34	41	47	16.00	15.9	FBS 1102+447	0.510	66.2	-26.3			N
11	14	20.0	44	29	57	15.11	14.8	FBS 1114+444	0.144	64.5	-24.4			Y
11	15	46.0	40	42	19	14.57	14.8	FBS 1115+407	0.154	66.7	-25.1		X	Y
11	21	55.8	42	18	14	15.84	15.5	FBS 1121+423	0.234	66.9	-24.8		X	Y
12	29	28.3	71		47	15.66	15.3	FBS 1229+710	0.208	46.3	-24.7		X	Y
12	29	28.6	35	46	48	15.24	15.1	CSO 900	0.131	80.6	-24.1	(4)	X	Y
13	3	54.9	39	31	28	15.71	15.7	FIRST J1306+3915	0.447	77.5	-25.8			Y
13	9	58.4	35	31	15	15.64	15.7	FBS 1309+355	0.183	80.7	-24.4	(4)	X	Y
13	12	30.3	78	37	44	15.84	15.6	HS 1312+7837	2.000	38.7	-29.9			N
13	22	8.5	65	57	25	15.71	15.6	FBS 1322+659	0.168	51.1	-24.2		X	Y
13	51	15.6	36	35	33	15.48	15.3	CSO 1022	0.286	73.9	-25.6			Y
14	2	37.7	43	41	27	15.62	15.1	FBS 1402+436	0.320	68.0	-25.7			Y
14	11	50.0	44	14	12	14.01	13.9	FBS 1411+442	0.089	66.4	-24.5		x	Y
14	44	50.2	40	47	37	15.45	15.6	FBS 1444+408	0.267	62.7	-25.5		X	Y
15	12	46.8	37	1	55	15.33	15.9	FBS 1512+370	0.369	58.3	-26.3		X	Y
16	21	23.5	39	16	27	15.91	16.2	B3 1621+392	1.970	44.7	-29.8		X	Y
16	24	14.6	34	5	56	15.80	15.2	RXS J16261+3359	0.204	43.8	-24.5		X	Y
16	34	51.6	70	37	37	15.27	14.9	FBS 1634+706	1.337	36.6	-29.5			Y
16	41	17.6	39	54	11	15.88	16.1	FBS 1641+399	0.595	40.9	-26.8		X	Y
17	8	23.2	33	47	42	15.82	15.6	RXS J17102+3344	0.208	34.7	-24.6	(4)	X	Y
17	10	0.2	67	53	29	15.94	15.9	HS 1710+6753	0.410	34.5	-25.9			N
17	21	32.0	34	20	41	15.23	15.3	B2 1721+34	0.205	32.2	-25.2		X	Y

In the case of RXSJ12110+7005 for which the APS magnitude is not available, Schwope et al. (2000) give B = 17.0, while the USNO O magnitude is 14.3; but this object has a moderate redshift (z = 0.127); moreover its APM O magnitude (Irwin et al. 1994) is 17.66; we therefore adopted the Schwope et al. mag and excluded it from the ``complete" sample.