Event Horizon

How to read the picture

The band over the hole is the same disk

Light from the far side is bent around the photon orbit and thrown over the top. You are not looking through anything — you are seeing a second image of one thin disk, folded by gravity.

Mass: 10M M☉
Rs: 29.53 million km
Horizon: 1.57 M
Photon: 1.77 M
ISCO: 2.80 M
Period: 28.4 min

Lensed disk · 10M M☉

Event Horizon

Tracing light