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| Observatory | Tel. size | Bands |
| Optical | ||
| Abastumani, Georgia | 70 cm | R |
| ARIES, India | 104 cm | BVRI |
| Armenzano, Italy | 35 cm | BRI |
| Armenzano, Italy | 40 cm | BVRI |
| Belogradchik, Bulgaria | 60 cm | VRI |
| BOOTES-2, Spain | 30 cm | R |
| Bordeaux, France | 20 cm | V |
| Calar Alto, Spaina | 220 cm | R |
| Crimean, Ukraine | 70 cm | BVRI |
| Kitt Peak (MDM), USA | 130 cm | UBVRI |
| L'Ampolla, Spain | 36 cm | R |
| Lulin (SLT), Taiwan | 40 cm | R |
| Michael Adrian, Germany | 120 cm | R |
| Mt. Lemmon, USA | 100 cm | BVRI |
| New Mexico Skies, USA | 30 cm | VRI |
| Roque (KVA), Spain | 35 cm | R |
| Roque (NOT), Spain | 256 cm | UBVRI |
| Rozhen, Bulgaria | 50/70 cm | BVR |
| Rozhen, Bulgaria | 200 cm | BVRI |
| Sabadell, Spain | 50 cm | R |
| San Pedro Martir, Mexico | 84 cm | R |
| Sobaeksan, South Korea | 61 cm | VRI |
| Sommers-Bausch, USA | 61 cm | VRI |
| St. Petersburg, Russia | 40 cm | BVRI |
| Talmassons, Italy | 35 cm | BVR |
| Teide (BRT), Spain | 35 cm | BVR |
| Torino, Italy | 105 cm | BVRI |
| Tuorla, Finland | 103 cm | R |
| Univ. of Victoria, Canada | 50 cm | R |
| Valle d'Aosta, Italy | 81 cm | BVRI |
| Near-infrared | ||
| Campo Imperatore, Italy | 110 cm | JHK |
| Roque (NOT), Spain | 256 cm | HK |
| Radio | ||
| Crimean (RT-22), Ukraine | 22 m | 37 GHz |
| Mauna Kea (SMA), USA |
mb
|
230, 345 GHz |
| Medicina, Italy | 32 m | 5, 8, 22 GHz |
| Metsähovi, Finland | 14 m | 37 GHz |
| Noto, Italy | 32 m | 43 GHz |
| UMRAO, USA | 26 m | 4.8, 8.0, 14.5 GHz |
|
a Calar Alto data were
acquired as part of the MAPCAT (Monitoring AGN with Polarimetry at the Calar Alto Telescopes) project. b Radio interferometer including 8 dishes of 6 m size. |
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