Jump to content


Complete Cocoon (RGB+LAB) including Heart WIP

Recommended Posts

A few days ago (before being struck down with man-flu), I managed to bag some more RGB and Lum subs for this one. So now ive recovered, its time to have a mess about with it.

I've also had a play with the colour, using RGB for the nebula - and LAB colour for the stars. Ive also pushed the blue a bit to catch the outer colour of the nebula and stars that are dotted throughout the image (there was far to much red last time).

Getting the background colour was a pain due to gradients, which was complicated by the fact it was a mosaic. Anyway, I think this is as far I can take it from my town centre(ish) location. Ive also included a little grab of the Heart nebula, nice to get it all in one frame for a change!

IC5146: Cocoon Nebula
18x450 L, 10x300 RGB  (RGB nebula, LAB colour stars) x2 panes

IC1805: Heart Nebula
8x900 (Ha)

80ED, Atik 383L+, NEQ6

Thanks for looking!

First, the Cocoon:


Fullsize here:


Now the Heart, just messin about really:


Fullsize here:


Edited by Uranium235
  • Like 4
Link to post
Share on other sites

Cheers Daniel, I think this one would really respond well to data taken from a dark site as killing off those colour gradients took its toll on some of the dust colour (should be brown). Shame there isnt an Autumn SGL starparty!

Link to post
Share on other sites

Cheers Mark, I'll try and wrap it up asap. Im hoping to hoover up at least another 3 or 4 targets before November in time to get the Christmas calendars printed (yep, its almost that time already!). Im thinking of distributing a few amongst the neighbours by way of thanks for keeping it dark out the back.

Link to post
Share on other sites

Cheers Ian, the LAB colour was fairly easy(ish), all it was a case of doing was copying the star layer* from the LAB colour version, then pasting that into the RGB version - blend mode colour. Not sure if thats the right way to do it, but it worked (kinda!).

Here is one of the numerous recipies for LAB colour with photoshop:


and here:


* thought id better expand on that bit.. What I did exactly was use noels "select brighter stars", expand the selection by 2, feather by 1, copy then paste into the RGB image.

Edited by Uranium235
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.