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Finding Charts and Comparison Sequences

The charts below are used in all our data reduction. Some fields contain calibrated comparison sequences and some do not. For those that do not, comparison stars were chosen for their brightness as compared to the object. Color and variability considerations do not come into play until later in the reduction process, and will be noted below the chart as they are discovered.

NOTE: The magnitudes without errors (errors are denoted with parentheses here) are taken from the USNO-A2.0 survey plates. As such, they may not be very accurate. All other magnitudes are referenced below the table if necessary. If a known comparison sequence has been omitted, it is unintentional. Please notify The Webmaster of any such omissions.

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RA+/-DEC	Catalog Name	Survey Name	AGN Type	Redshift
0003+199	QSO 0003+199	MKN 335	N-L Seyfert 1	0.025785
0039+401	0039+401	MKN 957	N-L Seyfert 1	0.071149
0050+124	PG 0050+124	I ZW 1	N-L Seyfert 1	0.061142
0054-226	0054-226	TON S180	N-L Seyfert 1	0.061980
0109+224	QSO 0109+224	OC 215.7	BL Lacertae
0121-590	QSO 0121-590	Fairall 9	Seyfert 1	0.047016
0124+185	IRAS 01248+1855	MKN 359	N-L Seyfert 1	0.017385
0227-091	IRAS F02276-0913	MKN 1044	N-L Seyfert 1	0.016451
0235+164	PKS 0235+164	AO 0235+16	BL Lacertae	0.940000
0306+102	QSO 0306+102	OE 110	Blazar/OVV	0.863000
0416+525	1ES 0414+009	ATZ98	BL Lacertae	0.287000
0420-014	PKS 0420-014	OF -035	Blazar/OVV	0.915000
0422+004	QSO 0422+004	OF 038	BL Lacertae	0.310000
0430+052	QSO 0430+052	3C 120	Seyfert 1	0.033010
0502+675	1ES 0502+675		BL Lacertae	0.314000
0513-002	QSO 0513-002	AKN 120	Seyfert 1	0.032296
0528+134	PG 0528+134	OG 147	Blazar/OVV	2.060000
0551+466	0551+466	MCG 8-11-11	Seyfert 1	0.020484
0558-504	PKS 0558-504		N-L Seyfert 1	0.137000
0707-495	1H 0707-495		N-L Seyfert 1	0.041100
0716+714	QSO 0716+714		BL Lacertae	0.300000
0735+178	PG 0735+178		BL Lacertae	0.424000
0736+017	PKS 0736+01	OI 061	Blazar/OVV	0.191000
0754+101	PKS 0754+101	OI 090.4	BL Lacertae	0.660000
0818-128	PKS 0818-128	OJ -131	BL Lacertae
0949-012		MKN 1239	N-L Seyfert 1	0.019927
1011+496	QSO 1011+496		BL Lacertae	0.200000
1101+384	QSO 1101+384	MKN 421	BL Lacertae	0.030021
1133+704	PKS 1133+704	MKN 180	BL Lacertae	0.045278
1156+295	PKS 1156+295	4C 29.45	Blazar/OVV	0.729000
1215+300	QSO 1215+300	MKN 766	N-L Seyfert 1	0.012929
1215+303	PKS 1215+303	ON 325	BL Lacertae	0.130000
1219+285	QSO 1219+285	ON 231	BL Lacertae	0.102000
1226+023	PG 1226+023	3C 273	Blazar/OVV	0.158339
1244+026	PG 1244+026		N-L Seyfert 1	0.048000
1253-055	PKS 1253-055	3C 279	Blazar/OVV	0.536200
1308+326	QSO 1308+326	OP 313	BL Lacertae	0.996000
1322-380	IRAS 13224-3809		N-L Seyfert 1	0.066700
1404+226	PG 1404+226		N-L Seyfert 1	0.098000
1426+428	1ES 1426+428		BL Lacertae	0.129000
1440+356	PG 1440+356	MKN 478	N-L Seyfert 1	0.079055
1510-089	PKS 1510-089	OR -017	Blazar/OVV	0.360000
1514-241	PKS 1514-24	AP Librae	BL Lacertae	0.048600
1552+193	QSO 1552+193	MKN 291	N-L Seyfert 1	0.035198
1553+113	QSO B1553+113	PG 1553+11	BL Lac	0.360000
1557+351	1557+351	MKN 493	N-L Seyfert 1	0.031328
1622-297	PKS 1622-297		Blazar/OVV	0.815000
1633+382	QSO 1633+382	OS 356	Blazar/OVV	1.814000
1639+398	QSO 1639+398	NRAO 512	Blazar/OVV	1.660000
1641+399	PKS 1641+399	3C 345	Blazar/OVV	0.592800
1652+398	PKS 1652+398	MKN 501	BL Lacertae	0.033663
1717+178	PKS 1717+178	OT 129	BL Lacertae
1748+687	QSO 1748+687	MKN 507	N-L Seyfert 1	0.055900
1959+650	1ES 1959+650		BL Lacertae	0.047000
2005-489	PKS 2005-489		BL Lacertae	0.071022
2041-109	2041-109	MKN 509	Seyfert 1	0.035500
2043-029	2043-029	MKN 896	N-L Seyfert 1	0.026424
2155-304	PKS 2155-304		BL Lacertae	0.116000
2200+420	PKS 2200+420	BL Lac	BL Lacertae	0.068800
2201+044	PKS 2201+044	4C 04.77	BL Lacertae	0.027000
2223-052	PKS 2223-052	3C 446	Blazar/OVV	1.404000
2230+114	PKS 2230+114	CTA 102	Blazar/OVV	1.037000
2240+294	2240+294	AKN 564	N-L Seyfert 1	0.024684
2251+158	PKS 2251+158	3C 454.3	Blazar/OVV	0.859000
2344+514	1ES 2344+51.4		BL Lacertae	0.044000
2345-167	PG 2345-16	OZ -176	Blazar/OVV	0.575998
RA+/-DEC	Catalog Name	Survey Name	AGN Type	Redshift

Database last updated at: GMT -0500 19:01:13.000000000