South Africa: Combined Power of Two Telescopes Is Helping Crack the Mystery of Eerie Rings in the Sky

[The Conversation Africa] When astronomers dream of their ideal telescopes, it's not that different to what people want from their TVs and computer monitors. Images they produce should be large and high definition, such as those from the Australian Square Kilometre Array Pathfinder (ASKAP), which have ~10k resolution (beyond the typical quality you get from digital TVs and digital cinematography). And they should have a high dynamic range, indicating high quality imaging with deep sensitivity to faint objects.