Linear Processing order questions

[SeattleStarGazer]

Just getting into PI processing, and had a couple questions. My reading and tutorials haven't been too clear on these. I'm  doing narrowband and have completed image integration but not channel combine. Is it better to do DBE and noise reduction like MLT before LF or after? And on the individual frames or the combined ones?

Thanks

[pfile]

DBE should be done on your stacked images, while they are linear. in fact DBE is probably the first thing you want to do after integration.

NR can be applied at linear stage or stretched, depending on the tool. i'd have a look at http://www.pixinsight.com.ar/ for some different NR tutorials

rob