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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.



Sort by
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


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Page last modified: 24 Jan 2005 at 02:06:53 AM