How to do transparent textures on Emission node in Blender Cycles I want to apply a transparent texture to an emssion node in a way that the the emission node will emit just from the not transparent parts of the image texture.  How to achieve this effect ?

Here' s a Picture of it
Are you going for something like this?



If so, then it's as simple as someonewithpc said, just an Emission shader mixed with a Transparent shader using the texture for the Fac.