I am trying to make a pillar cloud using an image transparency. I have a basic node set up for making the image show with transparent background. But I would like to make the cloud pillar glow. I am not sure how to set up the nodes to make this happen. I am using Blender 2.79 
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1$\begingroup$ Please use the edit link at the bottom of your question (i.sstatic.net/lXFuK.png) and add more information on how you set up your project. Add images that might help us understand what you have done so far. See How to upload an image to a post? $\endgroup$– user1853Commented May 31, 2019 at 13:13
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$\begingroup$ Thanks I edited the post and added a picture. $\endgroup$– AllenCommented May 31, 2019 at 14:36
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1 Answer
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Given that you are using an image to determine transparency, you can change the brightness by using any of the following nodes: gamma, color ramp, Bright Cont or even a Converter>Math node to affect the values.
To make things glow there are already endless posts on the subject in this site.
Start with this one:
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$\begingroup$ I tried the different nodes you suggested in the Alpha but it seems the transparency no longer works. I used a half of a cylinder to put this cloud object on and it starts showing when I put a new node where you suggested. In some cases it goes solid. I am sure I am doing something wrong. Thanks for the link for glowing objects. $\endgroup$– AllenCommented May 31, 2019 at 21:46