I am trying to create a nebula fx,some thing like this .
Does anyone know how to render houdini particles like krakatoa does?

Tried a glow shader but doesnt work for me.

Thanks in advance!

try multiplying Of by 0.9-something,
after its multiplied with Cf.
you should get an additive effect.

Thanks for your reply. Is it possible for you to upload an example file?I am new to houdini.

I tried your tips,but dint notice much change from my previous render. It's pretty much the same.

You'll need a TON of particles, advect them with a pyro sim to get the ribbony look. Set their alpha value very low so that they stack up and get solid in the areas they're most concentrated. Point prims render very efficiently in Mantra but depending on how many particles you end up with you'll need to use a delayed load procedural for rendering

see attached.

Can you get a Krakatoa for Houdini tutorial?I want to render particles with Krakatoa, but there is no tutorial on the web.