A #GreenFlash from #CTIO in multiple images stacked upon each other due to #mirage effects from air layering: https://noirlab.edu/public/images/iotw2313a/

The globular cluster #OmegaCentauri as seen by the 4-meter telescope on #CTIO with the #NEWFIRM Near-IR Camera: https://noirlab.edu/public/announcements/ann23013/

On this day 60 years ago astronomers selected #CerroTololo, a mountain in Chile, as the best spot to build a new #observatory in the southern hemisphere. Let’s take a look back at how far Cerro Tololo Inter-American Observatory (#CTIO) has come since then and at some of the most profound discoveries it has made: https://noirlab.edu/public/blog/anniversary-ctio/