Random triples
| Subject | Object |
|---|---|
| gptkb:Cherry_Springs_Dark_Sky_Park | Bortle 2 |
| gptkb:Llano_de_Chajnantor_Observatory | very dry atmosphere |
| gptkb:Llano_de_Chajnantor_Observatory | low water vapor |
| gptkb:Indian_Astronomical_Observatory,_Hanle | excellent |
| gptkb:Delingha_Observatory | dark skies |
| gptkb:Hanle_Observatory | excellent for optical and infrared observations |