What is this?

To me it looks like a black hole.


Legacy Survey Sky Browser

It is impossible to see black holes in this survey. It could be camera artifact on a star. The famous black hole image was taken with the event horizon telescope, which observes in radio frequencies. This survey uses visible light. Also, the zoom of the event horizon telescope is far greater than that of even the best optical telescopes.

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What is an artifact? I am still new.

The orange object is an early M dwarf at around 400 pc. The blue fuzzy thing is a galaxy, albeit slightly diffuse.


A camera artifact is something the camera sees but is not really there. This could be either a large halo around a bright star, or something caused by a malfunction. An example of an artifact is the little green dots you get when you point your phone at a bright light, or diffraction spikes.

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