In late 1990 at Perugia University Observatory we began to develop an Automatic Imaging Telescope (AIT) able to obtain photometric BVRcIc observations of predefined lists of objects without the presence of the users. This instrument is now dedicated to the monitoring of a sample of about 40 blazars, quasars, and BL Lac objects with the principal aims of searching for possible typical time scales and spectral variability. In 8 years of blazar monitoring, we have collected more than 22000 photometric points (till the year 2000), contributing to get the largest existing database on many sources. In the last three column we have reported blazar finding chart, light curve in R band, and NED page.

Object Name	Other Names	Blazar Type (1)	RA (2000)	Dec (2000)	Redshift z	Num of obs (2)	Average Mag R (3)	Mag R min	Mag R max	Finding Chart (4)	Light Curve (5)	NED Data (6)
GC 0109+224	S2 0109+22 TXS 0109+224	BL	01 12 05.8	+22 44 39	> 0.4	841	14.82	16.21	13.30
3C 66A	1ES 0219+428 B3 0219+428A	HPQ	02 22 39.6	+43 02 08	0.444	1087	13.79	14.94	13.08
AO 0235+164	1ES 0235+164 OD 160	BL	02 38 38.8	+16 36 59	0.94	177	14.98	16.94	14.04
4C 47.08	B3 0300+470 OE 400	BL	03 03 35.2	+47 16 16	0.475	298	15.90	16.70	15.34
NGC 1275	Perseus A 3C 84	UG	03 19 48.1	+41 30 42	0.017559	708	13.47	13.65	13.20
1H 0323+022	1ES 0323+022 H 0323+022	BL	03 26 14.0	+02 25 15	0.147	213	15.73	16.59	13.78
1H 0414+009	H 0414+00 1ES 0414+009	BL	04 16 53.8	+01 04 57	0.287	152	16.11	16.58	15.77
PKS 0422+00	OF 38 TXS 0422+004	BL	04 24 46.8	+00 36 06	0.31	652	14.06	15.46	13.03
ARK 120	UGC 3271 MRK 1095	HPQ	05 16 11.4	-00 08 59	0.032296	...	...	...	...		...
1ES 0647+250	MG2 J065043+2503	BL	06 50 46.5	+25 03 00	...	...	...	...	...		...
S5 0716+71	TXS 0716+714 1H 0717+714	BL	07 21 53.4	+71 20 36	>0.3	1231	13.71	14.81	12.58
PKS 0735+17	DA 237 1ES 0735+178	OVV	07 38 07.4	+17 42 19	>0.424	594	15.42	16.57	14.71
1ES 0806+524	87GB 0806+5227	BL	08 09 49.1	+52 18 59	0.138	294	15.38	15.81	15.01
PKS 0829+046	OJ 49 TXS 0829+046	BL	08 31 48.9	+04 29 39	0.180	361	14.74	15.56	13.12
OJ 287	PKS 0851+202 PG 0851+202	OVV	08 54 48.9	+20 06 31	0.306	1669	14.67	16.27	13.65
S4 0954+65	TXS 0954+658 2EG J0958+6537	BL	09 58 47.2	+65 33 55	0.368	405	15.43	16.46	14.47
MRK 421	UGC 6132 B2 1101+38	BL	11 04 27.3	+38 12 32	0.030021	...	...	...	...	...	...
OM 280	B2 1147+24 TXS 1147+245	BL	11 50 19.2	+24 17 54	>0.2	172	15.60	16.49	13.31
TON 605	B2 1215+30 ON 325	OVV	12 17 52.1	+30 07 01	0.130	300	14.22	14.63	13.99
PG 1218+304	B2 1218+30 H 1219+305	BL	12 21 21.9	+30 10 37	0.182	...	...	...	...		...
W Com	ON 231 B2 1219+28	BL	12 21 31.7	+28 13 59	0.102	1817	13.65	15.00	12.18
3C 273	PKS 1226+02 ON 44	LPQ	12 29 06.7	+02 03 09	0.158339	694	12.71	12.88	12.41
3C 279	PKS 1253-05 CTA 56	HPQ	12 56 11.1	-05 47 22	0.5362	208	14.46	15.95	13.55
OP 313	B2 1308+32 AU CVn	HPQ	13 10 28.6	+32 20 44	0.996	...	...	...	...		...
NGC 5548	7C 1415+2556 1E 1415.6+2557	BL	14 17 56.6	+25 43 25	0.237	129	...	...	...		...
OQ 530	PG 1418+546 S4 1418+54	BL	14 19 46.6	+54 23 15	0.151	433	15.15	15.86	14.44
PKS 1424+240	OQ 240 PG 1424+240	BL	14 27 00.4	+23 48 00	...	447	14.13	14.39	13.79
MS 1458.8+2249	RX J1501.0+2238	BL	15 01 01.9	+22 38 06	0.235	241	15.54	16.16	14.94
DA 406	OS 319 B2 1611+34	LPQ	16 13 41.0	+34 12 48	1.401	...	...	...	...		...
3C 345	B2 1641+39 OS 368	HPQ	16 42 58.8	+39 48 37	0.5928	153	16.02	16.79	15.38
MRK 501	UGC 10599 S4 1652+39	BL	16 53 52.2	+39 45 37	0.033663	754	13.34	13.49	13.12
H 1722+119	1H 1720+117 87GB 1722+1155	HPQ	17 25 04.4	+11 52 16	0.018	418	14.31	14.83	12.59
I Zw 187	OT 546 TXS 1727+502	BL	17 28 18.6	+50 13 10	0.055405	272	15.54	15.90	15.25
TXS 1741+196	1ES 1741+196	BL	17 43 57.8	+19 35 09	0.084	...	...	...	...		...
PKS 1749+096	4C 09.57 OT  81	BL	17 51 32.8	+09 39 01	0.322	...	...	...	...		...
3C 371	UGC 11130 S4 1807+69	OVV	18 06 50.7	+69 49 28	0.051	253	14.23	14.49	14.06
1ES 1959+650	TXS 1959+650	BL	19 59 59.8	+65 08 55	0.047	221	14.66	15.19	14.40
PKS 2032+107	TXS 2032+107 OW 154.9	BL	20 35 22.3	+10 56 07	0.601	238	15.01	15.33	14.82
PKS 2145+06	DA 562 4C 06.69	LPQ	21 48 05.4	+06 57 39	0.990	...	...	...	...		...
BL Lac	S4 2200+42 OY 401	BL	22 02 43.3	+42 16 40	0.0686	2453	13.51	15.20	12.38
B2 2201+31A	TXS 2201+315 1ES 2201+315	LPQ	22 03 15.0	+31 45 38	0.295	...	...	...	...		...
CTA 102	OY 150 H 2230+114	HPQ	22 32 36.4	+11 43 51	1.037	...	...	...	...		...
3C 454.3	H 2251+158 OY 185	HPQ	22 53 57.7	+16 08 54	0.859	...	...	...	...		...
PKS 2254+074	OY91 TXS 2254+074	BL	22 57 17.3	+07 43 12	0.190	301	15.98	16.63	15.35
1ES 2344+514	TXS 2344+514	BL	23 47 04.8	+51 42 18	0.044	382	14.82	15.16	14.58

(1) Classification from:

• - Veron-Cetty M. P. & Veron P.; "A CATALOGUE OF QUASARS AND ACTIVE GALACTIC NUCLEI. 8TH EDITION. ESO SCIENTIFIC REPORT SERIES VOL. 18."  1998, Garching:European Southern Observatory Publisher.
• - Urry C. M., & Padovani P.; 1995, Publications of the Astronomical Society of the Pacific, vol. 107, p. 803
• - Burbidge G. & Hewitt A.; "BL LAC OBJECTS AND RAPID VARIABLE QSOs, AN OVERVIEW."  In (Edited by) Valtaoja E. & Valtonen M.; "VARIABILITY OF BLAZARS."  1992, Cambridge University Press, p. 4.
• - Lähteenmäki A. & Valtaoja E.; 1999, The Astrophysical Journal, vol. 521, p. 493

BL= BL Lac object (HBL or LBL).   HPQ= High Polarized Quasar.   LPQ=Low Polarized Quasar.  OVV=Optically Violent Variable quasar.  UG=unusual galaxy.

(2) Number of total photometric observations in BVRcIc filters.

(3) Averaged Magnitude in Rc filter.

(4) Contains finding chart and data on VRI photometry of comparision stars in the blazar field.

(5) Historical light curve in Rc band from 1994 to March 2000 (not for all objects). 

(6) Link to blazar page of the Nasa Extragalactic Database.

Last Update 20 March 2000  - S. Ciprini

Note: the monitoring programme is still ONGOING but this preview page is updated only to beginning of 2000 due to lack of time.