Dr. Becky | Purple splotches in new Euclid space telescope images: real objects or ghosts? #shorts #astronomy @DrBecky | Uploaded 10 months ago | Updated 1 minute ago
What are the weird purple splotches in the new Euclid space telescope images? They’re sadly not an undiscovered space object but a “ghost” in the image caused by re-reflection of light inside the telescope back onto the detector. It’s most noticeable when there’s a very bright object like a nearby star and it affects blue light more.