Help with tri colour

[libraryman]

Hi, i need a little guidance with the processing of HA..O111 & S11 in my first try at processing narrowband.

In the attached screen shot, are the Histograms of the 3 stacks....i don't have Pixinsight yet so i made a HDR with Photoshop and i can see as i guess the knowledgeable on here will see that the stars in the image have Magenta centres amongst other things! 

I'm guessing that i need to use Masks (of which i have little experience) to sort that out.

but any advice on a way to improve the image or move forward would help.

Ray

[swag72]

I would select the stars using Noels actions - Give it a larger feather and then desaturate the magenta.

Or, if you go to noise reduction and do colour noise at 100% I think that should reduce the magenta stars

[libraryman]

O.K Sara, i try that for a starter...Thanks..

Edit: o.k tried that and it worked in part    ..i need to select all stars now and try again..Carbonies action only select brighter stars.

Ray

[Freddie]

What works best for me is "image" "adjustments" "selective colour" Select magentas from the drop down and then move the magenta slider to the left until the colour disappears. No need to select the stars to do this.

[libraryman]

O.K Freddie ill try that...been selecting stars for a while now but i cant move forward with it.

Ray

[Starlight 1]

I have been working from this one in "Imaging Discussion pinned Quattermass"  http://myastroimages.com/Astro_Imaging_Tutorials/index.php

[libraryman]

Cheers for the link and info.

Ray