Mads Hagbarth Lund shares his Nuke Spot Flare Gizmo designed to create single light flaring easily and with some degree of control.
Toolset to generate single light flaring with shimmering.
The Spot Flare Gizmo can also create a shimmering effect for the light flare and uses a glow that is by default inversely square, giving it a nice unlimited falloff.
The shimmer effect is also based on the falloff.There are a few animation settings for shimmer, as well as a timeoffset slider which will allow you to gang it to a camera or any other motion, including 3D support.
the Nuke Spot Flare Gizmo can be found on Nukepedia, Check out and download the Spot Flare Gizmo.