| Longitude | Latitude | Elevation | ||||||||
| Sites | Telescope |
|
|
meters | ||||||
| Alma-Ata (Kazakhstan) | T 60 | 76 | 57 | 15 | E | 43 | 12 | 00 | N | 1450 |
| Antony (France) | T 13 | 2 | 17 | 12 | E | 48 | 45 | 00 | N | 50 |
| Armagh (Northern Ireland) | T 25 | 6 | 38 | 59 | W | 54 | 21 | 11 | N | 67 |
| Bordeaux (France) | T 60 | 0 | 31 | 36 | W | 44 | 50 | 06 | N | 73 |
| Brescia (Italia) | T20 | 9 | 59 | 30 | E | 45 | 26 | 12 | N | 94 |
| Bucharest (Romania) | T 15 | 26 | 05 | 48 | E | 44 | 24 | 48 | N | 267 |
| Catania (Italia) | T 20 | 15 | 03 | 19 | E | 37 | 32 | 54 | N | 300 |
| Chateaugiron (France) | T 21 | 1 | 30 | 12 | W | 48 | 2 | 41 | N | 70 |
| Chemnitz (Germany) | L 6 | 12 | 51 | 10 | E | 50 | 49 | 25 | N | 344 |
| Cluj-Napoca (Romania) | T 41 | 23 | 35 | 37 | E | 46 | 42 | 36 | N | 750 |
| Dax (France) | T 32 | 1 | 01 | 43 | E | 43 | 41 | 35 | N | 35 |
| Dolberg (Germany) | T 20 | 7 | 54 | 53 | E | 51 | 42 | 45 | N | 68 |
| Ekaterinburg (Russia) | T 45 | 59 | 30 | 00 | E | 56 | 49 | 00 | N | 237 |
| Elgin, Oregon (USA) | T 20 | 117 | 55 | 16 | W | 45 | 34 | 22 | N | 835 |
| Gieres (France) | T 20 | 5 | 44 | 00 | E | 45 | 11 | 00 | N | 210 |
| Kavalur-VBO (India) | T 234 | 78 | 49 | 15 | E | 12 | 34 | 38 | N | 725 |
| Kavalur-VBO (India) | T 102 | 78 | 49 | 15 | E | 12 | 34 | 38 | N | 725 |
| Lanester (France) | T 20 | 3 | 21 | 15 | W | 47 | 45 | 00 | N | 0 |
| La Palma (Spain) | T 35 | 17 | 53 | 00 | W | 28 | 45 | 26 | N | 2300 |
| Lille (France) | L 32 | 3 | 4 | 15 | E | 50 | 36 | 57 | N | 32 |
| Tomar (Portugal) | T 25 | 8 | 23 | 02 | W | 39 | 31 | 23 | N | 90 |
| Lumezzane (Italia) | T 40 | 10 | 12 | 27 | E | 45 | 39 | 59 | N | 830 |
| Massa (Italia) | T 18 | 10 | 6 | 11 | E | 44 | 2 | 31 | N | 40 |
| Mainz (Germany) | T 25 | 8 | 14 | 56 | E | 49 | 55 | 05 | N | 205 |
| Meudon (France) | T 100 | 2 | 13 | 54 | E | 48 | 48 | 18 | N | 162 |
| Monegrillo (Spain) | T 41 | 0 | 24 | 43 | E | 41 | 38 | 38 | N | 425 |
| Monterrey (Mexico) | T 18 | 100 | 22 | 26 | W | 25 | 38 | 36 | N | 661 |
| Mt Dushak (Ukraine) | T 80 | 57 | 53 | 00 | E | 37 | 55 | 27 | N | 2020 |
| Mundolsheim (France) | T 15 | 7 | 42 | 50 | E | 48 | 38 | 50 | N | 135 |
| Nauchny (Ukraine) | T 60 | 34 | 01 | 00 | E | 44 | 43 | 37 | N | 600 |
| Novara (Italia) | L 6 | 8 | 37 | 30 | E | 45 | 28 | 30 | N | 160 |
| Nyrola (Finland) | T 41 | 25 | 30 | 47 | E | 62 | 20 | 32 | N | 210 |
| OHP (France) | L 15 | 5 | 42 | 36 | E | 43 | 53 | 36 | N | 665 |
| OHP (France) | T 80 | 5 | 42 | 36 | E | 43 | 53 | 36 | N | 665 |
| OHP (France) | T 120 | 5 | 42 | 36 | E | 43 | 53 | 36 | N | 665 |
| Prague (Czech Rep.) | L 18 | 14 | 23 | 52 | E | 50 | 04 | 53 | N | 327 |
| Prague (Czech Rep.) | T 41 | 14 | 23 | 53 | E | 50 | 04 | 52 | N | 327 |
| Pulkovo (Russia) | L 65 | 30 | 19 | 30 | E | 59 | 46 | 18 | N | 75 |
| Pulkovo (Russia) | T 32 | 30 | 19 | 30 | E | 59 | 46 | 18 | N | 75 |
| Rozhen (Bulgaria) | T 60 | 24 | 44 | 30 | E | 41 | 41 | 35 | N | 1750 |
| Sabadell (Spain) | T 80 | 2 | 05 | 29 | E | 41 | 33 | 04 | N | 224 |
| Strasbourg (France) | L 48 | 7 | 46 | 12 | E | 48 | 35 | 00 | N | 425 |
| Sendai (Japan) | T 36 | 140 | 52 | 30 | E | 38 | 16 | 36 | N | 55 |
| Sobota (Slovakia) | T 15 | 20 | 02 | 00 | E | 48 | 39 | 00 | N | 225 |
| Terskol (Russia) | T 60 | 42 | 30 | 03 | E | 43 | 16 | 36 | N | 3100 |
| Torrecilla de Valmadrid (Spain) | T 20 | 0 | 51 | 19 | W | 41 | 30 | 07 | N | 382 |
| Ukkel (Belgium) | T 85 | 4 | 21 | 28 | E | 50 | 47 | 51 | N | 105 |
| Vienna (Austria) | T 10 | 16 | 24 | 00 | E | 48 | 12 | 00 | N | 190 |
| Yunnan Obs. (China) | T 100 | 102 | 47 | 15 | E | 25 | 01 | 45 | N | 1940 |