Figure 1From: Observing supermassive black holes in virtual realityCelestial sphere in Minkowksi spacetime for an observer at \(r=10~r_{\mathrm { g}}\). The different colors represent different quadrants of the sky, with yellow and blue being behind the observer, while red and green are in front of the observer. The black lines represent lines of constant longitude and lattitudeBack to article page