Fresnel Shader

With the SF Fresnel shader you can create a glowing effect for the center of your black hole.

Configuration

Power	Defines the size of the inner black part of the object. In other words: Increase the power to make a thinner glowing edge. Decrease the power to make a thicker glowing edge,
Color	HDR glow color for the outer glow effect.Increase the intensity to make it shine brighter. Note: for an even better glow effect the demo scene is using a global post processing volume with the bloom filter. To enable post processing volumes in your scenes make sure that your camera has the Post Processing checkmark set.

Example uusing a simple sphere for the fresnel effect and the previous distortion plane enabled